法罗-设得兰盆地的放射性产热变化：区域和地方盆地建模的关键新产热、地质和地质年代数据

IF 1.9 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Petroleum Geoscience Pub Date : 2023-08-08 DOI:10.1144/petgeo2022-039

A. Finlay, D. Wray, Guy Comfort, Julian Moore

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引用次数: 0

摘要

本研究介绍了Chemostrat–APT联合研究的结果，该研究旨在为法罗-设得兰盆地的基岩生成一套放射性产热（RHP）数据，以便进行更准确的盆地建模。为了进行区域研究，根据相似性将地下室划分为四个区域。A区由Holdsworth等人（2019）假设的“Laxfordian前缘”西南部Rockall槽（四边形154和164）的高级变质基底形成。B区包括罗纳岭和盆地西南部（202/08-1204/15-2205/165205/21-1A、206/7a-2206/08-2206/09-2和206/12-1井）和拉克斯福德前缘东北部的花岗闪长质、英云闪长质和闪长质新太古代（2700-2830 Ma）高级变质基底。C区包含罗纳岭东北部的新太古代高级变质基底，主要由花岗岩和富含石英的花岗岩组成（207/01-3、207/02-1208/23-1和208/26-1井）。D区与本研究中其他材料的不同之处在于，它是209 Quads（埃雷兰火山中心）的加里东期（～460 Ma）花岗岩深成基底。放射性热产生值来源于通过ICP-OES和ICP-MS分析84个基底样品所产生的钾、钍和铀数据。然后为每个绘制的基底区分配一个平均放射性产热值，用于未来的盆地建模研究；区域A=0.21µWm 3，区域B=0.64µWm 3.区域C=0.88µWm，区域D=2.1µWm。专题收藏：本文是UKCS大西洋边缘系列的一部分，可在以下网站获取：https://www.lyellcollection.org/topic/collections/new-learning-from-exploration-and-development-in-the-ukcs-atlantic-margin补充材料：https://doi.org/10.6084/m9.figshare.c.6771540

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Radioactive Heat Production variations in the Faroe-Shetland Basin: key new heat production, geological and geochronological data for regional and local basin modelling

This study presents the results of a joint Chemostrat – APT study that aimed to produce a suite of Radioactive Heat Production (RHP) data for basement rocks in the Faroe Shetland Basin to enable more accurate basin modelling to be undertaken. To enable regional studies to be undertaken, the basement has been split into four zones based on similarities. Zone A is formed of high grade metamorphic basement from the Rockall trough (quads 154 & 164) southwest of the “Laxfordian front” postulated by Holdsworth et al., (2019). Zone B comprises granodioritic, tonalitic and dioritic Neoarchean aged (2700-2830 Ma) high grade metamorphic basement from the southwest of the Rona Ridge and Basin (wells 202/08-1, 204/15-2, 205/161, 205/21-1A, 206/7a-2, 206/08-2, 206/09-2 and 206/12-1) and northeast of the Laxfordian front. Zone C contains Neoarchean aged high grade metamorphic basement of a predominantly granitic and quartz rich granitoid composition from the northeast of the Rona Ridge (wells 207/01-3, 207/02-1, 208/23-1 and 208/26-1). Zone D differs from the rest of the material in this study in that it is Caledonian (∼460 Ma) granitic plutonic basement from Quads 209 (Ereland volcanic centre). Radioactive heat production values were derived from Potassium, Thorium and Uranium data produced from the analysis of eighty-four basement samples by ICP-OES and ICP-MS analysis. Each mapped basement zone was then assigned a mean radioactive heat production value for use in future basin modelling studies; Zone A = 0.21 µWm 3 , Zone B, 0.64 µWm 3 , zone C = 0.88 µWm 3 and zone D = 2.1 µWm 3 . Thematic collection: This article is part of the UKCS Atlantic Margin collection available at: https://www.lyellcollection.org/topic/collections/new-learning-from-exploration-and-development-in-the-ukcs-atlantic-margin Supplementary material: https://doi.org/10.6084/m9.figshare.c.6771540

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来源期刊

Petroleum Geoscience 地学-地球科学综合

CiteScore

4.80

自引率

11.80%

发文量

审稿时长

>12 weeks

期刊介绍： Petroleum Geoscience is the international journal of geoenergy and applied earth science, and is co-owned by the Geological Society of London and the European Association of Geoscientists and Engineers (EAGE). Petroleum Geoscience transcends disciplinary boundaries and publishes a balanced mix of articles covering exploration, exploitation, appraisal, development and enhancement of sub-surface hydrocarbon resources and carbon repositories. The integration of disciplines in an applied context, whether for fluid production, carbon storage or related geoenergy applications, is a particular strength of the journal. Articles on enhancing exploration efficiency, lowering technological and environmental risk, and improving hydrocarbon recovery communicate the latest developments in sub-surface geoscience to a wide readership. Petroleum Geoscience provides a multidisciplinary forum for those engaged in the science and technology of the rock-related sub-surface disciplines. The journal reaches some 8000 individual subscribers, and a further 1100 institutional subscriptions provide global access to readers including geologists, geophysicists, petroleum and reservoir engineers, petrophysicists and geochemists in both academia and industry. The journal aims to share knowledge of reservoir geoscience and to reflect the international nature of its development.