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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Atlantic Ocean
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Australia
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Commonwealth of Independent States
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Pb-206/Pb-204 (5)
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Pb-207/Pb-204 (4)
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Pb-208/Pb-204 (2)
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Re-187/Os-188 (1)
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stable isotopes
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C-13/C-12 (7)
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D/H (1)
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He-4 (1)
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Hf-177/Hf-176 (2)
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Nd-144/Nd-143 (9)
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O-18/O-16 (10)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (5)
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Pb-207/Pb-204 (4)
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Pb-208/Pb-204 (2)
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Re-187/Os-188 (1)
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S-34/S-32 (3)
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Sm-147/Nd-144 (2)
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Sr-87/Sr-86 (9)
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Lu/Hf (3)
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metals
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Sr-87/Sr-86 (9)
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aluminum (2)
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iron (1)
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Pb-206/Pb-204 (5)
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Pb-207/Pb-204 (4)
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samarium
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yttrium (2)
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rhenium
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Re-187/Os-188 (1)
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tantalum (1)
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nitrogen (2)
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noble gases
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helium
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oxygen
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O-18/O-16 (10)
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sulfur
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Invertebrata
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Porifera
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Demospongea (1)
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lichens (1)
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Conodonta (2)
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miospores
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pollen (1)
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Plantae
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algae
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Chrysophyta (2)
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diatoms (5)
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thallophytes (3)
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geochronology methods
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Ar/Ar (5)
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K/Ar (1)
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Lu/Hf (3)
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paleomagnetism (18)
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Pb/Pb (6)
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Rb/Sr (8)
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Re/Os (5)
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thermochronology (3)
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U/Pb (54)
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U/Th/Pb (2)
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geologic age
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Cenozoic
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Quaternary
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Pleistocene
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upper Pleistocene
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Wisconsinan
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upper Quaternary (1)
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Tertiary
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Neogene (1)
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Paleogene
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Eocene
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middle Eocene
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Lutetian (1)
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-
-
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Laurentide ice sheet (3)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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McMurray Formation (1)
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Upper Cretaceous
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Campanian (1)
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Jurassic
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Middle Jurassic (2)
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Paleozoic
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Cambrian (1)
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Keg River Formation (1)
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Prairie Evaporite (1)
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Slave Point Formation (1)
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Upper Devonian
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Grosmont Formation (1)
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Ordovician
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Middle Ordovician (1)
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Phanerozoic (2)
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Precambrian
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Archean
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Mesoarchean (3)
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Neoarchean (22)
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Paleoarchean (2)
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Yellowknife Group (17)
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Hadean (3)
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Sleepy Dragon Complex (3)
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Stillwater Complex (1)
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upper Precambrian
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Proterozoic
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Mesoproterozoic
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Neoproterozoic (4)
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Aphebian (7)
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Statherian (1)
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igneous rocks
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carbonatites (2)
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metamorphic rocks
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metaplutonic rocks (6)
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metavolcanic rocks (23)
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turbidite (8)
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minerals
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fluorides
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hydrates (1)
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minerals (16)
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native elements
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rutile (2)
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orthoamphibole
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pyroxene group
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clinopyroxene
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orthopyroxene (1)
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framework silicates
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feldspar group
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K-feldspar (1)
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plagioclase
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nepheline group
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nepheline (2)
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silica minerals
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coesite (1)
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quartz (5)
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orthosilicates
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britholite group
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garnet group
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pyrope (2)
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larnite (1)
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zircon group
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ring silicates
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mica group
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phlogopite (4)
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serpentine group
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sulfates (1)
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sulfides
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realgar (1)
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sulfosalts (2)
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tellurides
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tellurobismuthite (1)
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Primary terms
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absolute age (67)
-
Africa
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Central Africa
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Congo Democratic Republic (1)
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East Africa
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Tanzania (1)
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Limpopo Belt (1)
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Southern Africa
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Kaapvaal Craton (3)
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South Africa
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Bushveld Complex (2)
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Transvaal region (1)
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West Africa
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Guinea (1)
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Arctic Ocean (1)
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Arctic region
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Greenland
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Ilimaussaq (1)
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Asia
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Far East
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China
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North China Platform (2)
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Japan
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Honshu (1)
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Indian Peninsula
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India (2)
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Siberia (2)
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Yakutia Russian Federation (1)
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Atlantic Ocean
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atmosphere (1)
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Australasia
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Australia
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Western Australia
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Eastern Goldfields (1)
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Pilbara (1)
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Pilbara Craton (1)
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Yilgarn Craton (1)
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biogeography (2)
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boron
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brines (4)
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stable isotopes
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Two-Stage Model of Devonian Basic Magmatism in the Vilyui Paleorift (Siberian Platform) Available to Purchase
Earth’s Earliest Crust Available to Purchase
Facies analysis for the Neoarchean Itchen and Sherpa formations of the Winter Lake greenstone belt, Slave craton, Northwest Territories, Canada Available to Purchase
Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous paleogeography Available to Purchase
Extent and significance of the Racklan–Forward Orogen in Canada: far-field interior reactivation during Nuna assembly Available to Purchase
Abstract Mesoproterozoic orogenesis is well established on the western and southern flanks of Laurentia in the well-known Racklan–Forward and Mazatzal orogens, but its significance within the previously assembled interior of the supercontinent Nuna has not been established. We examine regional isotopic and structural evidence for Mesoproterozoic deformation in the c. 1.7–1.63 Ga Hornby Bay, Elu, Thelon and Athabasca intracontinental basins, and present evidence for Mesoproterozoic reactivation of Paleoproterozoic structures in the Wopmay and Trans-Hudson orogens. The Racklan–Forward Orogeny in the interior of north Laurentia comprises north–south-trending, high-angle, east-vergent folds and thrusts that occur across a region 1660 km wide and over 1000 km long, stretching from the Yukon to near Hudson Bay and from Banks Island to below the Western Canada Sedimentary Basin. The structures progress from ductile amphibolite and greenschist facies in the Racklan type area to sub-greenschist facies and ultimately brittle or brittle-ductile in the far foreland, showing a predominant thick-skinned style typical of many intracontinental orogens. We present compiled low-temperature thermochronological data, including ages of spatially associated uraninite mineralization, to characterize the scope of reactivation of basement structures in the Archean Rae craton in Nuna's interior. We compare the nature of widespread far-field reactivation in the Racklan–Forward Orogen with other orogens of Nuna's assembly to show it is unusual for Nuna's peripheral margin. We suggest that c. 1.6 Ga continent–continent collision of North Australia with NW Laurentia propagated stresses far into the interior as a result of combined favourable pre-existing structural grain and a weak subcontinental lithospheric mantle in the Rae craton due to repeated episodes of refertilization across 500 Ma of accretion and intrusion. Cratons that experience the complex, two-sided collision and protracted upper plate setting during supercontinent assembly noted herein may be particularly susceptible to extensive foreland propagation of peripheral orogens.