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煤山二叠纪-三叠纪过渡期事件地层时序的微观地层记录
煤山 二叠纪-三叠纪过渡期 微观地层 事件时序
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2009/7/10
煤山剖面二叠纪-三叠纪过渡期24~29层微观地层特征, 清晰地显示了这一关键地层段持续的缺氧及频发的风暴扰动、固结基底/硬底构造、火山喷发、陆地风化和丘状微生物岩发育等事件的整体时序关系, 为综合探讨二叠纪末期生物灭绝的机制提供依据. 晚二叠世长兴组24层以发育有机质微细纹层为主, 间断性受到风暴形成的底流冲刷, 暗示这一时期静滞、分层和缺氧的海洋主体环境. 晚二叠世末期快速海侵事件发生于24d层...
特马道克阶是奥陶系的第一个阶, 阶内通常采用二分方案, 其中上特马道克阶的时间跨度约为8 Ma. 笔石是上特马道克阶高分辨率地层划分与对比的重要类群, 相对完整的笔石带序列已在斯堪的纳维亚、北美和南美建立. 华南上特马道克阶的笔石地层相当发育, 但是已知笔石带序列既不完整, 也难以进行国际对比. 近年来, 通过对湖南省益阳市南坝剖面中笔石标本的不间断采集, 在Tetragraptus appr...
Rock-Forming Nannofossils in Uppermost Jurassic-Lower Cretaceous Rock Units of Northwest Anatolia: Nannoconusand Its Resived Taxonomy
Rock-Forming Nannofossils Northwest Anatolia Uppermost Jurassic-Lower Cretaceous Rock
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2009/7/8
Nannoconids have been recorded in a rock-forming quantity in the uppermost Jurassic-Lower Cretaceous rock units in Northwest Anatolia, Turkey. Samples were collected from seventeen stratigraphic secti...
Biostratigraphic and Environmental Analysis of the Upper Jurassic- Lower Cretaceous Carbonate Sequence in the Başoba Yayla Area (Trabzon, NE Turkey)
Biostratigraphy Depositional environment Carbonate platform Upper Jurassic-Lower Cretaceous Eastern Pontides Turkey
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2009/7/8
In the Başoba Yayla (Trabzon, NE Turkey) area, which is located in the Eastern Pontides northern zone, platform carbonates were deposited during the Late Jurassic-Early Cretaceous time in environ...
Late Devonian (Famennian) Conodonts from Denizliköyü, Gebze, Kocaeli, Northwestern Turkey
Late Devonian (Famennian) conodont Gebze Kocaeli Turkey
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2009/7/8
Late Devonian (Famennian) conodont faunas have been described from two incomplete stratigraphic sections (GD and GB) of the Ayineburnu member of the Tuzla formation, Denizliköyü, Gebze, Kocaeli,...
Upper Cretaceous Stratigraphy of the Bey Dağları Carbonate Platform, Korkuteli Area (Western Taurides, Turkey)
Upper Cretaceous Bey Dağ ları carbonate platform erosion planktonic foraminifera
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2009/7/8
The Upper Cretaceous Korkuteli (Antalya) carbonate sequence of the Bey Dağları autochthonous unit (western Taurides) comprises two formations. The Cenomanian-Santonian Bey Dağları...
The Ophiolitic Molasse Unit of Ikaria Island (Greece)
Olistostrome ophiolite Cretaceous molasse Miocene Ikaria Cyclades Greece
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2009/7/8
Ikaria Island can be divided generally into two composite tectonic units, namely the lower and upper. The lower unit comprises paragneiss basement with local orthogneiss bodies that is overlain by a p...
Tertiary Terrestrial to Shallow Marine Deposition in Central Anatolia: A Palynological Approach
Eocene Middle Miocene palynostratigraphy palaeoecology central Anatolia Turkey
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2009/7/8
In central Turkey the Çankırı Basin developed between the Kırşehir and Sakarya continents as a collisional basin during the Tertiary. Along the southern border, between Yozg...
Revised Stratigraphy and Facies Analysis of Palaeocene-Eocene Supra-allochthonous Sediments (Denizli, SW Turkey) and Their Tectonic Significance
stratigraphy facies analysis Palaeocene-Eocene supra-allochthonous basin
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2009/7/8
A non-metamorphosed sedimentary sequence of Late Palaeocene-Eocene age exposed to the south of Dereköy Village (east of Denizli) was formerly interpreted as the uppermost part of the Menderes Mas...
Mid-Ordovician (Late Darriwilian) Conodonts from the Southern-Central Taurides, Turkey: Geological Implications
middle-Ordovician palaeogeography Taurides Turkey stratigraphy Conodonts
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2009/7/8
The Tekmen Member of the Seydişehir Formation of the Silifke-Aydıncık Nappe is exposed between the towns Silifke and Aydıncık, in the central Taurides, southern Turkey. The me...
Tectonostratigraphic Evolution of the North Anatolian Palaeorift (NAPR): Hettangian-Aptian Passive Continental Margin of the Northern Neo-Tethys, Turkey
tectonostratigraphy palaeorift three-stage graben model supradetachment basin Hettangian-Aptian northern Neo-Tethys Northern Turkey
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2009/7/8
The Jurassic-Early Cretaceous stratigraphical, sedimentological and structural evolutionary history of the northern branch of Neo-Tethys is recorded and preserved within an average 6-km-thick basin f...
Timing of Late Holocene Earthquakes on the Eastern Düzce Fault and Implications for Slip Transfer between the Southern and Northern Strands of the North Anatolian Fault System, Bolu, Turkey
North Anatolian Fault System slip transfer active fault palaeoseismology Holocene
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2009/7/8
Results of trenching across the eastern Düzce Fault document that surface rupture has occurred repeatedly on the fault prior to the 1999 Düzce earthquake, and that offset during previous earthquakes ...
Roveacrinids from Northern Arabian Plate in SE Turkey
crinoids roveacrinids systematics cenomanian Turkey
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2009/7/8
Crinoid remains from Cenomanian limestones in SE Anatolia have been studied. These crinoids belong to the family Roveacrinidae and are characterised by their lacking a stem and free living above the s...
Geology and Correlation of the Ezine Zone: A Rhodope Fragment in NW Turkey?
northwestern Turkey Ezine Group Permo-Triassic syn-rift sequence Denizgö ren ophiolite Barremian metamorphic sole Rhodope margin Maliac/Meliata Ocean
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2009/7/8
In northwestern Turkey, the Denizgören ophiolite and its sedimentary substratum, the Ezine Group, are enigmatic geological objects whose evolution remains problematic. Based on long-term fieldwor...
Significance of the Volcanogenic Nilüfer Unit and Related Components of the Triassic Karakaya Complex for Tethyan Subduction/Accretion Processes in NW Turkey
Nilüfer Unit NW Turkey Karakaya Complex subduction/accretion Triassic Tethys
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2009/7/8
The Tethyan Karakaya Complex extends east-west across northern Turkey from the Aegean coast to Iran (c. 1100 km), and is interpreted as a Mid-Late Triassic subduction/accretion complex. It comprises s...