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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