Fluid inclusion evidence for impact-related hydrothermal fluid and hydrocarbon migration in Creataceous sediments of the ICDP-Chicxulub drill core Yax-1
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منابع مشابه
Clastic Polymict Dikes in the “megablock” Sequence of the Icdp-chicxulub Drill Core Yax-1
Introduction: The Yaxcopoil borehole (Yax-1) penetrates below the suevitic units through 600 m of sediments (894.9 m – 1510.9 m). These rocks are most likely of Cretaceous age and are regarded as a displaced “megablock”. The stratified sequence was intruded by suevitic dikes (910 m, 916 m), one impact melt dike (1347 m) and several clastic, polymict dikes. The latter are the focus of this study...
متن کاملPlatinum Group Elements Analysis of Impactites from the Icdp Chicxulub Drill Core Yax-1: Are There Traces of the Impactor?
Introduction: The nature of the Chicxulub impactor is still not fully understood. Attempts to identify the traces of the impactor from chemical analyses of impactites within the crater are extremely controversial. Ir analyses of samples from the Chicxulub-1 and Yucatan-6 drill cores lead to different results. Nuggets of platinum group elements (PGE) and Ir concentration of more than 1000pg/g we...
متن کاملHydrothermal Alteration of the Impactites at the Icdp Drill Site Yax-1
Introduction. About 100 m of impactites (suevitetype breccias) have been drilled at the ICDP drill site Yax-1 within the Chicxulub impact structure (see [1] for more information). Post-impact hydrothermal alteration including alkali metasomatism and devitrification of impact melt glass has significantly modified the mineralogy and chemistry of the impact breccia lithologies. Hydrothermal altera...
متن کاملEvidence of hydrothermal barite in Mashkan area, northeastern Sabzevar: mineralogy, geochemistry, and fluid inclusion
Mashkan barite prospect area is located in the northeastern Sabzevar, Khorasan Razavi Province. Geology of the area includes sedimentary rocks of conglomerate, sandstone, limestone with interbeds of shale and shale with interbeds of sandstone and Eocene volcanic units of andesite and trachyandesite. Barite with open space filling, massive, radial, and planar textures occurs as vein-type with mo...
متن کاملShock Metamorphism of Impactite Lithologies of the Icdp Chicxulub Drill
(1) Upper sorted suevite (794.63 – 807.75 m) and (2) Lower sorted suevite (807.75 – 823.25 m): The dominating component in both units of the sorted suevite are melt particles of shock stage IV. Two different textural types of melt particles were observed: (1) brownish to pale green silicate melt particles with flow texture, vesicles and schlieren; and (2) dark aphanitic particles with inclusion...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2004
ISSN: 1086-9379,1945-5100
DOI: 10.1111/j.1945-5100.2004.tb01136.x