Palaeoenvironmental, palaeogeographic, and palaeoclimatic signals of a condensed horizon: The Upper Callovian-Oxfordian Dhosa Oolite of the Kachchh Basin, western India

凝结地平线的古环境、古地理和古气候信号：印度西部卡奇盆地的上卡洛夫阶-牛津阶多萨鲕岩

• 批准号: 110141185
• 负责人: Professor Dr. Franz Theodor Fürsich
• 金额: --
• 依托单位: Periyar University
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/110141185?language=en
• 关键词: Palaeoenvironmental; palaeogeographic; palaeoclimatic; signals; condensed

The highly condensed Oxfordian Dhosa Oolite of the Kachchh Basin of western India provides a unique opportunity for analysing a variety of condensation phenomena such as synsedimentary lithification, mineralisation, depositional gaps, erosional phases, and palimpsest sediments. Furthermore, it is possible to trace them from their distal to their proximal development within the basin, for a distance of >100 km. In addition, possible dropstones within a thick iron crust on top of the unit and dissolution features within the deposits possibly indicate short-lived rapid sea level changes and regional glaciation. An interdisciplinary analysis of the rock unit involving various sedimentological, palaeontological, and geochemical approaches aims at unravelling the complex features of the condensed unit, reconstructing the sea-level history, and reconstructing the palaeoclimate (humidity, average temperatures and annual fluctuations) in this part of south-eastern Gondwana. Particular emphasis will be placed on testing the hypothesis of regional glaciation during the Late Oxfordian.

印度西部Kachchh盆地的高度浓缩的Oxfordian dhosa橄榄岩为分析各种凝聚现象提供了独特的机会，如同沉积岩化、矿化、沉积缝隙、侵蚀阶段和复古沉积。此外，可以追踪它们在盆地内从远端到近端的发育，距离为100公里。此外，单元顶部厚厚的铁壳中可能存在的落石以及沉积物中的溶解特征可能表明了短暂的快速海平面变化和区域冰川作用。对岩石单元的跨学科分析涉及到各种沉积学、古生物学和地球化学方法，目的是解开凝结单元的复杂特征，重建海平面历史，并重建冈瓦那东南部这一部分的古气候(湿度、平均温度和年波动)。重点将放在检验牛津纪晚期区域冰川作用的假说上。

项目成果

Stable isotope analyses of belemnites from the Kachchh Basin, western India: paleoclimatic implications for the Middle to Late Jurassic transition

• DOI: 10.1007/s10347-011-0278-9
• 发表时间: 2012-04-01
• 期刊: FACIES
• 影响因子: 1.8
• 作者: Alberti, Matthias;Fuersich, Franz T.;Ramkumar, Mu.
• 通讯作者: Ramkumar, Mu.

Seasonality in low latitudes during the Oxfordian (Late Jurassic) reconstructed via high-resolution stable isotope analysis of the oyster Actinostreon marshi (J. Sowerby, 1814) from the Kachchh Basin, western India

通过对来自印度西部卡奇盆地的牡蛎 Actinostreon marshi (J Sowerby, 1814) 进行高分辨率稳定同位素分析重建牛津纪（晚侏罗世）低纬度地区的季节性

• DOI: 10.1007/s00531-013-0864-x
• 期刊: International Journal of Earth Sciences
• 影响因子: 2.3
• 作者: Alberti;Fürsich;Pandey
• 通讯作者: Pandey

Deciphering condensed sequences: A case study from the Oxfordian (Upper Jurassic) Dhosa Oolite member of the Kachchh Basin, western India

破译压缩序列：印度西部卡奇盆地牛津阶（上侏罗统）多萨鲕粒岩成员的案例研究

• DOI: 10.1111/j.1365-3091.2012.01351.x
• 发表时间: 2013
• 期刊: Sedimentology
• 影响因子: 3.5
• 作者: Alberti;Fürsich;Pandey
• 通讯作者: Pandey

The Oxfordian stable isotope record (δ18O, δ13C) of belemnites, brachiopods, and oysters from the Kachchh Basin (western India) and its potential for palaeoecologic, palaeoclimatic, and palaeogeographic reconstructions

• DOI: 10.1016/j.palaeo.2012.05.018
• 发表时间: 2012-08-01
• 期刊: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
• 影响因子: 3
• 作者: Alberti, Matthias;Fuersich, Franz T.;Pandey, Dhirendra K.
• 通讯作者: Pandey, Dhirendra K.