Global ETD Search
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Showing 1 to 6 of 6 for “"Heterozoan"”.
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Investigations on the importance of early diagenetic processes for the mineralogical stabilisation and lithification of heterozoan carbonate assemblages : (Oligo-Miocene, Maltese Islands and Sicily)
… Only in recent years the importance of heterozoan carbonates, generally formed out of the tropics or in deeper waters, was realized. Diagenetic studies focusing on this kind of rocks are still scarce, but indicate that the diagenetic evolution of these rocks might be a better model for …
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Investigations on sedimentology and early diagenesis in shallow-water warm-temperate to tropical miocene carbonates : a case study from Northern Sardinia, Italy
… assemblages change gradually over time from a heterozoan-rich into a photozoan-rich depositional system. This transition implies a change in the depositional environmental control factors such as temperature. It is considered that sedimentation took place under warm-temperate waters, which …
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Sequence Stratigraphy of the Bridal Veil Falls Limestone, Carboniferous, Lower Oquirrh Group, on Cascade Mountain, Utah: A standard Morrowan Cyclostratigraphy for the Oquirrh Basin
… beds. The predominance of muddy to grain-rich heterozoan limestone microfacies suggests deposition on a west-dipping low energy carbonate ramp that prograded westward throughout Morrowan time. Sandstones reflect transport of siliciclastics from the incipient Weber shelf (located to the NE) …
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Hydrodynamic Controls on Sedimentology and Geomorphology of Marine-Carbonate Ramps: Insights from a Holocene Analogue, Northern Yucatán Shelf, Mexico
… currents. This influx supports this transitional heterozoan and photozoan grain association. Persistent trade winds, periodic tropical storms and winter storms generate waves that propagate onto shoreface. This mixed energy, wave-dominated ramp system includes lagoon, barrier island, and upper …
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Subsurface stratigraphy and petrology of a cool-water carbonate fracture reservoir - the mid-tertiary Tikorangi Formation, Taranaki Basin, New Zealand
… mixed siliciclastic-carbonate nature, heterozoan biotic carbonate make-up, low-Mg calcite mineralogy of skeletons and cements, and delayed deep burial diagenetic history are key features of current cool-water carbonate models. However, these evolving models of temperate carbonate …
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Sequence Stratigraphy and Depositional Controls on Oligocene-Miocene Caribbean Carbonate-Dominated Systems, Puerto Rico and the Dominican Republic
… sea-level fluctuations. Facies are dominated by heterozoans and large benthic foraminifera (LBF) along with coralline red algae and cool- and turbid-water tolerant photozoan corals (Montastraea, Goniopora, Porites, and Agaricia). This facies composition is atypical of tropical shallow-water …