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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Cape Verde Islands (1)
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East Africa
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Kenya (1)
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North Africa
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Morocco
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Rif (1)
-
Taourirt Morocco (1)
-
-
-
Southern Africa
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Botswana (1)
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Karoo Basin (1)
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Namibia (1)
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South Africa
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Eastern Cape Province South Africa (1)
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-
-
-
Antarctica
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East Antarctica (1)
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Transantarctic Mountains
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Beardmore Glacier (1)
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Victoria Land
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McMurdo dry valleys (1)
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Asia
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Baikal rift zone (1)
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Far East
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China
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North China Platform (1)
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Qinling Mountains (1)
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Yunnan China
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Ailao Shan (2)
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Vietnam (2)
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Himalayas
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Indian Peninsula
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India
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Rajasthan India
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Aravalli Range (1)
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Tamil Nadu India (1)
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Nepal
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Kali Gandaki Valley (1)
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Norilsk Russian Federation (1)
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Main Central Thrust (2)
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Middle East
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Cyprus
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Troodos Massif (2)
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Iran (1)
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Southeast Asia (1)
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Atlantic Ocean
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North Sea (3)
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South Atlantic
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Rio Grande Rise (1)
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Atlantic Ocean Islands
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Cape Verde Islands (1)
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Tristan da Cunha (1)
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Australasia
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Canada
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Ontario
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Central Graben (1)
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Commonwealth of Independent States
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Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Norilsk Russian Federation (1)
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Murmansk Russian Federation
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Germany
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Poland (1)
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Murmansk Russian Federation
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Kola Peninsula (1)
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Rhenish Schiefergebirge
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Southern Europe
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Spain
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Italy (1)
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North America
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elements, isotopes
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Sr-87/Sr-86 (3)
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metals
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Sr-87/Sr-86 (3)
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copper (1)
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lead
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Pb-207/Pb-206 (1)
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nickel (1)
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fossils
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Invertebrata
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Protista
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Tertiary
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Pliocene
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upper Pliocene (1)
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Paleogene
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Eocene
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lower Eocene (2)
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Oligocene (2)
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Paleocene
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lower Paleocene
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Danian (1)
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upper Paleocene (2)
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Mesozoic
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Cretaceous
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Lower Cretaceous (2)
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Upper Cretaceous (2)
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Jurassic
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Ferrar Group (3)
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Kirkpatrick Basalt (2)
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Lower Jurassic (4)
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Upper Jurassic
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Kimmeridge Clay (1)
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Triassic
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Middle Triassic (1)
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Upper Triassic (1)
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Paleozoic
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Cambrian (1)
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Carboniferous (4)
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lower Paleozoic (1)
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Ordovician (2)
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Permian
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Lower Permian (1)
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Rotliegendes (1)
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Silurian (1)
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Phanerozoic (1)
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Precambrian
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Archean
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Aravalli System (1)
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Delhi Supergroup (1)
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Nonesuch Shale (1)
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upper Precambrian
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Proterozoic
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Banded Gneissic Complex (1)
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Keweenawan (1)
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Paleoproterozoic (1)
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igneous rocks
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extrusive rocks (59)
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igneous rocks
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carbonatites (5)
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granophyre (1)
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hypabyssal rocks (2)
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kimberlite (1)
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peperite (1)
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plutonic rocks
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diabase (3)
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gabbros (2)
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leucogranite (1)
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granodiorites (1)
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ijolite (1)
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porphyry (1)
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volcanic rocks
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andesites (4)
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basalts
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alkali basalts (1)
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flood basalts (3)
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mid-ocean ridge basalts (3)
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tholeiite (2)
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dacites (2)
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glasses
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volcanic glass (1)
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komatiite (1)
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nephelinite (2)
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phonolites (1)
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pyroclastics
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hyaloclastite (1)
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ignimbrite (1)
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tuff (3)
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rhyolites
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quartz porphyry (1)
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ophiolite (4)
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volcanic ash (1)
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metamorphic rocks
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metamorphic rocks
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fulgurite (1)
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gneisses
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paragneiss (1)
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metaigneous rocks (1)
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metavolcanic rocks (1)
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ophiolite (4)
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minerals
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carbonates
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halides
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minerals (2)
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oxides
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phosphates
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fluorapatite (1)
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silicates
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chain silicates
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amphibole group
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clinoamphibole
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hornblende (1)
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pyroxene group
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clinopyroxene
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aegirine (1)
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framework silicates
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feldspar group
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alkali feldspar
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sanidine (1)
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plagioclase (3)
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nepheline group
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nepheline (2)
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zeolite group (1)
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orthosilicates
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nesosilicates
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garnet group
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pyrope (1)
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kyanite (1)
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olivine group (1)
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titanite group
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titanite (1)
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-
zircon group
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zircon (4)
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sorosilicates
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melilite group
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melilite (1)
-
-
-
-
sheet silicates
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mica group
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biotite (2)
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muscovite (1)
-
-
-
-
-
Primary terms
-
absolute age (9)
-
Africa
-
Cape Verde Islands (1)
-
East Africa
-
Kenya (1)
-
-
North Africa
-
Morocco
-
Rif (1)
-
Taourirt Morocco (1)
-
-
-
Southern Africa
-
Botswana (1)
-
Karoo Basin (1)
-
Namibia (1)
-
South Africa
-
Eastern Cape Province South Africa (1)
-
-
-
-
Antarctica
-
East Antarctica (1)
-
Transantarctic Mountains
-
Beardmore Glacier (1)
-
-
Victoria Land
-
McMurdo dry valleys (1)
-
-
-
Asia
-
Baikal rift zone (1)
-
Far East
-
China
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North China Platform (1)
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Qinling Mountains (1)
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Yunnan China
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Ailao Shan (2)
-
-
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Vietnam (2)
-
-
Himalayas
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High Himalayan Crystallines (1)
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Zanskar Range (1)
-
-
Indian Peninsula
-
India
-
Rajasthan India
-
Aravalli Range (1)
-
-
Tamil Nadu India (1)
-
-
Nepal
-
Kali Gandaki Valley (1)
-
-
-
Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Norilsk Russian Federation (1)
-
-
-
Main Central Thrust (2)
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Middle East
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Cyprus
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Troodos Massif (2)
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Iran (1)
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Southeast Asia (1)
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Atlantic Ocean
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North Atlantic
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North Sea (3)
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Northeast Atlantic (1)
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South Atlantic
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Rio Grande Rise (1)
-
-
-
Atlantic Ocean Islands
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Canary Islands (1)
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Cape Verde Islands (1)
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Tristan da Cunha (1)
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Australasia
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Australia (1)
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Canada
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Lake Timiskaming (1)
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Ontario
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Batchawana Bay (1)
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Timiskaming District Ontario
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Quebec (1)
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Western Canada
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British Columbia (2)
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Canadian Cordillera (1)
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Caribbean region
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West Indies
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Antilles
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Lesser Antilles
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Montserrat Island
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Soufriere Hills (1)
-
-
-
-
-
-
Cenozoic
-
lower Cenozoic (1)
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Quaternary
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Holocene (1)
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Pleistocene (1)
-
-
Tertiary
-
middle Tertiary (1)
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Neogene
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Miocene
-
lower Miocene (2)
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upper Miocene (1)
-
-
Pliocene
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upper Pliocene (1)
-
-
-
Paleogene
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Eocene
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lower Eocene (2)
-
-
Oligocene (2)
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Paleocene
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lower Paleocene
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Danian (1)
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upper Paleocene (2)
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continental shelf (2)
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crust (13)
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crystal growth (1)
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data processing (1)
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Deep Sea Drilling Project (1)
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deformation (8)
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Europe
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Poland (1)
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Murmansk Russian Federation
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Southern Europe
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Italy (1)
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France
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Ireland
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Scandinavia
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United Kingdom
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England (1)
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faults (13)
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geochemistry (12)
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geochronology (1)
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geophysical methods (2)
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geothermal energy (1)
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heat flow (1)
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hydrology (1)
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igneous rocks
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carbonatites (5)
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granophyre (1)
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hypabyssal rocks (2)
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kimberlite (1)
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peperite (1)
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plutonic rocks
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diabase (3)
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diorites (2)
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gabbros (2)
-
granites
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alkali granites (1)
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charnockite (1)
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leucogranite (1)
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monzogranite (1)
-
-
granodiorites (1)
-
ijolite (1)
-
ultramafics (3)
-
-
porphyry (1)
-
volcanic rocks
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andesites (4)
-
basalts
-
alkali basalts (1)
-
flood basalts (3)
-
mid-ocean ridge basalts (3)
-
tholeiite (2)
-
-
dacites (2)
-
glasses
-
volcanic glass (1)
-
-
komatiite (1)
-
nephelinite (2)
-
phonolites (1)
-
pyroclastics
-
hyaloclastite (1)
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ignimbrite (1)
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tuff (3)
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rhyolites
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quartz porphyry (1)
-
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inclusions
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fluid inclusions (1)
-
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intrusions (23)
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Invertebrata
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Protista
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Radiolaria (1)
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-
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isotopes
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stable isotopes
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Nd-144/Nd-143 (1)
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Pb-207/Pb-206 (1)
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Sr-87/Sr-86 (3)
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lava (16)
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magmas (19)
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mantle (7)
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Mesozoic
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Cretaceous
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Lower Cretaceous (2)
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Upper Cretaceous (2)
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Jurassic
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Ferrar Group (3)
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Kirkpatrick Basalt (2)
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Upper Jurassic
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Kimmeridge Clay (1)
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Triassic
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Upper Triassic (1)
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-
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metal ores
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iron ores (2)
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metals
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alkaline earth metals
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magnesium (1)
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strontium
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Sr-87/Sr-86 (3)
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copper (1)
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iron (1)
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lead
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Pb-207/Pb-206 (1)
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nickel (1)
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platinum group (1)
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rare earths
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neodymium
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Nd-144/Nd-143 (1)
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metamorphic rocks
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fulgurite (1)
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gneisses
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paragneiss (1)
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metaigneous rocks (1)
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metasedimentary rocks
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paragneiss (1)
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metamorphism (9)
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North American Cordillera
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Ocean Drilling Program (1)
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paleomagnetism (1)
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Paleozoic
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lower Paleozoic (1)
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Permian
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Rotliegendes (1)
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Silurian (1)
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petroleum (1)
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petrology (14)
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Phanerozoic (1)
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plate tectonics (15)
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Precambrian
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Archean
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Aravalli System (1)
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Delhi Supergroup (1)
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Nonesuch Shale (1)
-
upper Precambrian
-
Proterozoic
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Banded Gneissic Complex (1)
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Keweenawan (1)
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Paleoproterozoic (1)
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sea-floor spreading (2)
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sedimentary rocks
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
extrusive rocks
Modified Low-Field NMR Method for Improved Pore Space Analysis in Tight Fe-Bearing Siliciclastic and Extrusive Rocks Open Access
Geodetic constraints on three-component motion of the Ordos block (China) and their implications for lithospheric dynamics Open Access
Evolution and Involution of Carbonatite Thoughts Free
Chapter 2.1a Ferrar Large Igneous Province: volcanology Available to Purchase
Abstract Preserved rocks in the Jurassic Ferrar Large Igneous Province consist mainly of intrusions, and extrusive rocks, the topic of this chapter, comprise the remaining small component. They crop out in a limited number of areas in the Transantarctic Mountains and southeastern Australia. They consist of thick sequences of lavas and sporadic occurrences of volcaniclastic rocks. The latter occur mainly beneath the lavas and represent the initial eruptive activity, but also are present within the lava sequence. The majority are basaltic phreatomagmatic deposits and in at least two locations form immense phreatocauldrons filled with structureless tuff breccias and lapilli tuffs with thicknesses of as much as 400 m. Stratified sequences of tuff breccias, lapilli tuffs and tuffs are up to 200 m thick. Thin tuff beds are sparsely distributed in the lava sequences. Lava successions are mainly 400–500 m thick, and comprise individual lavas ranging from 1 to 230 m thick, although most are in the range of 10–100 m. Well-defined colonnade and entablature are seldom displayed. Lava sequences were confined topographically and locally ponded. Water played a prominent role in eruptive activity, as exhibited by phreatomagmatism, hyaloclastites, pillow lava and quenching of lavas. Vents for lavas have yet to be identified.
Chapter 2.1b Ferrar Large Igneous Province: petrology Available to Purchase
Abstract The Lower Jurassic Ferrar Large Igneous Province consists predominantly of intrusive rocks, which crop out over a distance of 3500 km. In comparison, extrusive rocks are more restricted geographically. Geochemically, the province is divided into the Mount Fazio Chemical Type, forming more than 99% of the exposed province, and the Scarab Peak Chemical Type, which in the Ross Sea sector is restricted to the uppermost lava. The former exhibits a range of compositions (SiO 2 = 52–59%; MgO = 9.2–2.6%; Zr = 60–175 ppm; Sr i = 0.7081–0.7138; ε Nd = −6.0 to −3.8), whereas the latter has a restricted composition (SiO 2 = c. 58%; MgO = c. 2.3%; Zr = c. 230 ppm; Sr i = 0.7090–0.7097; ε Nd = −4.4 to −4.1). Both chemical types are characterized by enriched initial isotope compositions of neodymium and strontium, low abundances of high field strength elements, and crust-like trace element patterns. The most basic rocks, olivine-bearing dolerites, indicate that these geochemical characteristics were inherited from a mantle source modified by subduction processes, possibly the incorporation of sediment. In one model, magmas were derived from a linear source having multiple sites of generation each of which evolved to yield, in sum, the province-wide coherent geochemistry. The preferred interpretation is that the remarkably coherent geochemistry and short duration of emplacement demonstrate derivation from a single source inferred to have been located in the proto-Weddell Sea region. The spatial variation in geochemical characteristics of the lavas suggests distinct magma batches erupted at the surface, whereas no clear geographical pattern is evident for intrusive rocks.
Observation on Rock Melt Extrusion Occurrence in Southern. Available to Purchase
How does a monzogranite turn into a trachydacitic extrusion mantled by basinal volcaniclastics and peperites? The case of South-Ouessant, Armorican Variscides (France) Available to Purchase
Distribution of Felsic-Mafic Intrusive and Extrusive Rocks in the Earth’s Crust: Correlation with Magma Viscosity Regularities Available to Purchase
Diamond Exploration and Resource Evaluation of Kimberlites Available to Purchase
Structural evolution, metamorphism and melting in the Greater Himalayan Sequence in central-western Nepal Available to Purchase
Abstract Joining geological mapping, structural analysis, petrology and geochronology allowed the internal architecture of the Greater Himalayan Sequence (GHS) to be unraveled. Several top-to-the-south/SW tectonic–metamorphic discontinuities developed at the regional scale, dividing it into three main units exhumed progressively from the upper to the lower one, starting from c. 40 Ma and lasting for several million years. The activity of shear zones has been constrained and linked to the pressure–temperature–time–deformation ( P – T – t – D ) evolution of the deformed rocks by the use of petrochronology. Hanging wall and footwall rocks of the shear zones recorded maximum P – T conditions at different times. Above the Main Central Thrust, a cryptic tectonometamorphic discontinuity (the High Himalayan Discontinuity (HHD)) has been recognized in Central-Eastern Himalaya. The older shear zone, that was active at c. 41–28 Ma, triggered the earlier exhumation of the uppermost GHS and allowed the migration of melt, which was produced at peak metamorphic conditions and subsequently produced in abundance at the time of the activation of the HHD. Production of melt continued at low pressure, with nearly isobaric heating leading to the genesis and emplacement of andalusite- and cordierite-bearing granites. The timing of the activation of the shear zones from deeper to upper structural levels fits with an in-sequence shearing tectonic model for the exhumation of the GHS, further affected by out-of-sequence thrusts.
Miocene to Holocene geological evolution of the Lazufre segment in the Andean volcanic arc Open Access
The Ferrar Large Igneous Province: field and geochemical constraints on supra-crustal (high-level) emplacement of the magmatic system Available to Purchase
Abstract: The Ferrar Large Igneous Province forms a linear outcrop belt for 3250 km across Antarctica, which then diverges into SE Australia and New Zealand. The province comprises numerous sills, a layered mafic intrusion, remnants of extensive lava fields and minor pyroclastic deposits. High-precision zircon geochronology demonstrates a restricted emplacement duration (<0.4 myr) at c. 182.7 Ma, and geochemistry demonstrates marked coherence for most of the Ferrar province. Dyke swarms forming magma feeders have not been recognized, but locally have been inferred geophysically. The emplacement order of the various components of the magmatic system at supra-crustal levels has been inferred to be from the top-down lavas first, followed by progressively deeper emplacement of sills. This order was primarily controlled by magma density, and the emptying of large differentiated magma bodies from depth. An alternative proposal is that the magma transport paths were through sills, with magmas moving upwards to eventually reach the surface to be erupted as extrusive rocks. These two hypotheses are evaluated in terms of field relationships and geochemistry in the five regional areas where both lavas and sills crop out. Either scenario is possible in one or more instances, but neither hypothesis applies on a province-wide basis. Supplementary material: The locations of samples, and trace element data and major element analyses of samples are available at: https://doi.org/10.6084/m9.figshare.c.3819454
Petrology, Geochemistry and Tectonics of the Extrusive Sequence of Fannuj-Maskutan Ophiolite, Southeastern Iran Available to Purchase
Passive rifting and continental splitting in the Jurassic Ligurian Tethys: the mantle perspective Available to Purchase
Abstract Based on present knowledge of mantle peridotites from the Ligurian Tethys ophiolites, this paper presents new ideas and a new model for passive rifting to ocean spreading in the slow–ultraslow rifting Europe–Adria realm. Relevant points include: (i) the positive feedback between deformation and melt percolation during passive magmatic rifting; (ii) the positive feedback between natural evidence and experimental data on the behaviour of the mantle lithosphere during passive rifting; (iii) the significance of hidden magmatism and the associated melt thermal advection; (iv) the role of the wedge-shaped weakened and softened axial zone; and (v) the evidence of a transition from passive to active rifting in the Ligurian Tethys. Passive rifting induced passive asthenospheric upwelling and the onset of partial melting. Fractional melts migrated through the mantle lithosphere and stagnated at shallow levels (the hidden magmatism). Melt thermal advection heated the mantle lithosphere to temperatures ( T ) of ≥1200°C and formed a wedge-shaped axial zone of rheological softened/weakened mantle peridotites that served as the future locus of continental break-up. The hotter/deeper asthenosphere ascended within this axial zone, underwent partial melting and formed aggregated mid-ocean ridge basalts (MORBs) that migrated within dunite channels to form olivine gabbro intrusions and basaltic lava flows. Rifting evolved from passive to active, and the actively upwelling asthenosphere established a ridge-type system and thermal regime.