Facies
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Shell mineralogical trends in epifaunal Mesozoic bivalves and their relationship to seawater chemistry and atmospheric carbon dioxide concentration
Facies - Tập 52 - Trang 417-433 - 2006
The Late Triassic-Early Jurassic change from aragonite- to calcite-facilitating conditions in the oceans, which was caused by a decrease of the Mg2+/Ca2+ ratio of seawater in combination with an increase of the partial pressure of carbon dioxide, also affected the shell mineralogy of epifaunal bivalves. In the “calcite sea” of the Jurassic and Cretaceous, the most diverse and abundant families of ......
Biogenic methane and burrowing as important controlling factors in the early diagenesis of permian carbonate rocks in South Sichuan/China
Facies - Tập 18 - Trang 289-301 - 1988
The 400m thick Lower Permian carbonate sequence of South Sichuan/China, which is considered to be a most important gas reservoir rock, exhibits calcitized gas bubbles and dolomitized burrows which are the result of early diagenesis. The fossiliferous, highly algal-enriched limestones are part of the Yangtze Platform and are composed of biomicrites, biosparites and calcarenites of subtidal and inte......
Microfacies and diagenesis of lower and middle cretaceous carbonate rocks of NW-Yugoslavia (Slovenia, Trnovo area)
Facies - Tập 21 - Trang 135-169 - 1989
A profile of about 1400 m thickness near the village of Trnovo in the Trnovo forest in SW-Slovenia was studied for the microfacies and diagenetic development of the carbonate rocks. Because of the detailed biostratigraphic subdivision being just in improvement, the interval from the problematic Jurassic/Cretaceous to the Tertiary boundary (Berriasian-Cenomanian, fault, Senonian) was subdivided int......
Lebensspuren von Meersauriern und ihren Beutetieren im mittleren Jura (Callovien) von Liesberg, Schweiz
Facies - Tập 39 - Trang 105-124 - 1998
Numerous gutter-like furrows, up to 60 cm wide and up to 9 m long are preserved at the interface “Macrocephalus Beds”/“Callovian Marl” over a surface of 20 by 200 m. They are interpreted as feeding traces made by large marine vertebrates, most likely plesiosaurs and ichthyosaurs searching for food in the lime mud of the shallow Middle Jurassic sea floor. Possible prey animals were infaunal inverte......
Middle Triassic carbonate deposits and calcareous algae from the Sasca zone (Southern Carpathians, Romania)
Facies - Tập 30 - Trang 85-100 - 1994
The Sasca zone situated in the innermost part of the Getic Domain from the South Carpathians comprises mainly Triassic deposits of Scythian-Anisian (?Ladinian) age that can be ascribed to four different members forming the Sasca Formation. Three of the members consist of carbonate deposits. Their study permitted a brief characterization of the main microfacies types, and especially in the Valea Su......
Toarcian–Kimmeridgian depositional cycles of the south-western Morondava Basin along the rifted continental margin of Madagascar
Facies - Tập 52 - Trang 85-112 - 2006
After rifting and final breakup of Gondwana along the former East-African-Antarctic Orogen during the Toarcian–Aalenian, passive margins formed around the Proto-Indian Ocean. Sedimentological and stratigraphic studies in the southern Morondava Basin contribute to an improved reconstruction of palaeoenvironmental changes during the syn-rift and post-rift margin formation. Depositional models based ......
Age, microfacies and depositional environment of the Middle to Late Paleocene shallow-marine carbonates in the Sirt Basin of Libya (Upper Sabil Formation): “Are Intisar domal structures pinnacle reefs?”
Facies - Tập 67 - Trang 1-30 - 2021
In the central-eastern Sirt Basin, enigmatic Intisar domal structures host significant hydrocarbon accumulations. These structures have been commonly interpreted as pinnacle reefs/bioherms occurring in the open-marine basinal environment. Generally, pinnacle reefs/bioherms are mainly characterized by in situ carbonates. The current study challenges the Intisar pinnacle reef/bioherm model by examin......
Coral zonation of an Oxfordian reef tract in the northern French Jura
Facies - Tập 50 - Trang 545-559 - 2005
During the Middle Oxfordian, numerous coral reefs flourished on the northern margin of the Tethys Ocean. The outcrop of Bonnevaux-le-Prieuré (northern French Jura mountains) provides a rare opportunity to observe a nearly complete section allowing the installation, evolution and demise of this global carbonate reef rich event to be studied. Quantitative data on coral assemblages together with sedi......
Paleoceanography and rotational block faulting in the Jurassic carbonate series of the Chiemgau Alps (Bavaria)
Facies - Tập 24 - Trang 1-23 - 1991
The Jurassic carbonate series of the Lechtal and Allgäu Nappes in the central part of the Northern Calcareous Alps reflect formation of orogen-parallel structures with swells and basins. Regional facies patterns display the morphologies of the various depositional environments. During the Middle Jurassic, an elongated swell evolved parallel to the overall structural strike in the central part of L......
Facies patterns of a tropical heterozoan carbonate platform under eutrophic conditions: the Banc d’Arguin, Mauritania
Facies - Tập 61 - Trang 1-24 - 2014
High-nutrient tropical carbonate systems are known to produce sediments that, in terms of skeletal composition, are reminiscent of their extra-tropical counterparts. Such carbonate systems and associated carbonate grain assemblages in the tropics are rare in the present-day world. Nonetheless, it is crucial to gain a better understanding of those ecosystems, including their drivers and players bec......
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