The planktic foraminiferPlanorotalitesin the Tethyan middle Eocene
نویسندگان
چکیده
منابع مشابه
Larger benthic foraminifera from the Middle Eocene
Larger benthic foraminifera (LBF) are common and diverse throughout the Paleogene sediments of southern Tanzania, but have previously been little studied. A recent programme of onshore drilling known as the Tanzania Drilling Project has recovered large proportion of this succession for palaeoclimatic and palaeontological study. The sediment is largely a hemipelagic clay with secondary gravity s...
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In this research, biostratigraphy related to the carbonate succession of the Shahbazan Formation at the southeastern flank of Chenar anticline, Lurestan Basin, is discussed. A study of large benthic foraminifera from the 294 mthick Shahbazan Formation led to the identification of two Middle Eocene biozones: Somalina sp. Zone, Nummulites-Alveolina Assemblage Zone. The age of the Shahbazan Format...
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The symbiont-bearing mixed-layer planktic foraminiferal genera Morozovella and Acarinina were among the most important calcifiers of early Paleogene tropical-subtropical oceans. A marked and permanent switch in the abundance of these genera is known to have occurred at low-latitude sites at the beginning of the Early Eocene Climatic Optimum (EECO), such that the relative abundance of Morozovell...
متن کاملA middle Eocene carbon cycle conundrum
1 The global carbon cycle The global carbon cycle encompasses the sum of processes that determine the amount of carbon within, and fluxes between, different carbon reservoirs on Earth (Fig. 1). These processes are quantitatively important on a range of timescales and can induce both short-term fluctuations and changes in steady-state conditions1–3. On timescales of up to centuries and thousands...
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ژورنال
عنوان ژورنال: Journal of Micropalaeontology
سال: 2015
ISSN: 0262-821X,2041-4978
DOI: 10.1144/jmpaleo2014-030