نتایج جستجو برای: paleogene

تعداد نتایج: 1290  

Journal: :The Mining-Geological-Petroleum Engineering Bulletin 2022

We analyzed the tectonics and stratigraphy of Southern Great Tarakan Basin to determine its tectonic evolution during Mesozoic-Cenozoic Eras, basin geometry, potential hydrocarbon using integrated surface subsurface data. can be divided into three sub-basins, Berau, Muara, South Tarakan. They comprise deposits Jurassic Quaternary age, which assigned five mega sequences based on their lithologic...

Journal: :Journal of Systematics and Evolution 2021

Menispermaceae are a pantropical and temperate family with an extensive fossil record during the Paleogene period, especially in North America Europe, but much less evidence from Asia. The latest indicates succession of tropical to subtropical flora on central Tibetan Plateau Paleogene. However, biogeographic histories these floras still unresolved. Here, we report endocarps leaves Middle Eocen...

Journal: :Frontiers in Earth Science 2021

Fold-and-thrust belts and their associated structures are among the most common geological features of convergent margins. They provide significant information about crustal shortening mountain-building processes. In subaerial belts, where erosional rates high growth strata mostly eroded, methodologies such as that presented here can insights into to formation. Two 2D cross-sections located in ...

Journal: :Journal of Vertebrate Paleontology 2022

Rhynchocephalia, a once diverse clade of lizard-like reptiles, had nearly global distribution during much the Mesozoic. By Late Cretaceous rhynchocephalians underwent marked reduction in their diversity and biogeographic range, with sparse records only deeply nested taxa (e.g., Sphenodontinae) found Upper Cretaceous–Paleocene Patagonia Miocene–Recent New Zealand. Here we describe partial dentar...

Journal: :Earth and Planetary Science Letters 2021

The sedimentary basins of Yunnan, Southwest China, record detailed histories Cenozoic paleoenvironmental change. They track regional tectonic and palaeobiological evolution, both which are critically important for the development modern floral diversity in southwestern China throughout Asia more generally. However, to be useful, archives within have placed a well-constrained timeframe independe...

Journal: :Minerals 2021

The Zhuguangshan complex hosts the main uranium production area in South China. We report (U-Th)/He and fission track thermochronological data from Triassic–Jurassic mineralized non-mineralized granites overlying Cambrian Cretaceous sandstone units Lujing ore field (LUOF) to constrain upper crustal tectono-thermal evolution of central complex. Two sandstones yield reproducible zircon (ZHe) ages...

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