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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Asia
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Middle East
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Turkey
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Anatolia (1)
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Antalya Turkey (1)
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Lycian Taurus (1)
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Eurasia (1)
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Europe
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Central Europe
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Poland (1)
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North America (1)
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Southern Ocean
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Ross Sea (1)
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United States
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Georgia (1)
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elements, isotopes
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carbon
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C-13/C-12 (2)
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isotope ratios (3)
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isotopes
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stable isotopes
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C-13/C-12 (2)
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Mg-26/Mg-24 (1)
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O-18/O-16 (2)
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metals
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alkaline earth metals
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calcium
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Mg/Ca (1)
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magnesium
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Mg/Ca (1)
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Mg-26/Mg-24 (1)
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oxygen
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O-18/O-16 (2)
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fossils
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Invertebrata
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Cnidaria
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Anthozoa
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Zoantharia
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Scleractinia (3)
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Protista
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Foraminifera
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Rotaliina
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Cassidulinacea
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Globocassidulina (1)
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microfossils (2)
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geologic age
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Cenozoic
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upper Pleistocene (1)
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Mesozoic
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minerals
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carbonates
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aragonite (2)
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calcite (2)
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Primary terms
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Asia
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Middle East
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Turkey
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Anatolia (1)
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Antalya Turkey (1)
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Lycian Taurus (1)
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carbon
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C-13/C-12 (2)
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Cenozoic
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upper Pleistocene (1)
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diagenesis (1)
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Europe
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Central Europe
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Poland (1)
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geochemistry (2)
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Invertebrata
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Cnidaria
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Anthozoa
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Zoantharia
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Scleractinia (3)
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Protista
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Foraminifera
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Rotaliina
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Cassidulinacea
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Globocassidulina (1)
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isotopes
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stable isotopes
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C-13/C-12 (2)
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Mg-26/Mg-24 (1)
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O-18/O-16 (2)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Aptian (1)
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Upper Cretaceous
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Ripley Formation (1)
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Jurassic
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Upper Jurassic
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Oxfordian (1)
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Triassic
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Upper Triassic
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Carnian (1)
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Norian (1)
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metals
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alkaline earth metals
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calcium
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Mg/Ca (1)
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magnesium
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Mg/Ca (1)
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Mg-26/Mg-24 (1)
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North America (1)
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oxygen
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O-18/O-16 (2)
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sea water (2)
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sedimentary rocks
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carbonate rocks (1)
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sediments
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marine sediments (1)
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Southern Ocean
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Ross Sea (1)
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United States
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Georgia (1)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks (1)
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sediments
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sediments
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marine sediments (1)
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Two Rare Pustulose/spinose Morphotypes of Benthic Foraminifera from Eastern Ross Sea, Antarctica
A Cenozoic record of seawater Mg isotopes in well-preserved fossil corals
Aragonitic scleractinian corals in the Cretaceous calcitic sea
DIAGENETIC ALTERATION OF TRIASSIC CORAL FROM THE ARAGONITE KONSERVAT-LAGERSTÄTTE IN ALAKIR ÇAY, TURKEY: IMPLICATIONS FOR GEOCHEMICAL MEASUREMENTS
Nanotextures of aragonite in stromatolites from the quasi-marine Satonda crater lake, Indonesia
Abstract Stromatolites have been extensively used as indicators of ancient life on Earth. Although much work has been done on modern stromatolites, the extent to which biological processes control their structure, and the respective contributions of biological and abiotic processes in their formation are, however, still poorly constrained. A better description of the mineralogical textures of these formations at the submicrometre scale may help improve our understanding of how carbonates nucleate and grow in stromatolites. Here, we used a combination of microscopy and microspectroscopy techniques to study the chemical composition and the texture of aragonite in lacustrine stromatolites from the alkaline crator lake in Satonda, Indonesia. Several textural features are described, including morphological variations of aragonite from nanosized grains to micrometre-sized fibres, the presence of striations in the aragonite laminae showing a striking similarity with growth bands in corals, and clusters of small aragonite crystals sharing a common crystallographic orientation. These nanotextural features are compared with those observed in scleractinian corals, and possible processes involved in their formation are discussed.