Petrography and geochemistry of ejecta from the Sudbury impact event
نویسندگان
چکیده
منابع مشابه
Geochemistry of Impact Ejecta from Lonar
Introduction: The young Lonar crater, Maharashtra, India [1-3], is a bowl-shaped, almost circular, simple impact crater [4] of relatively small diameter ~1.8 km [5]. The uniqueness of this crater is that it is one of two known terrestrial impact craters excavated on basaltic target rock. The target-rock of this crater is the sub-horizontal Deccan basalt flows (~67 M.y.) [6]. All around the circ...
متن کاملGeochemistry and shock petrography of the Crow Creek Member, South Dakota, USA: Ejecta from the 74-Ma Manson impact structure
The Crow Creek Member is one of several marl units recognized within the Upper Cretaceous Pierre Shale Formation of eastern South Dakota and northeastern Nebraska, but it is the only unit that contains shock-metamorphosed minerals. The shocked minerals represent impact ejecta from the 74-Ma Manson impact structure (MIS). This study was aimed at determining the bulk chemical compositions and ana...
متن کاملDepartment of Mineralogy , Petrography and Geochemistry
Department of Mineralogy, Petrography and Geochemistry is the oldest Earth science department at the AGH University of Science and Technology. It was created in 1919 as one of the first six departments of the Academy of Mining and was initially named as the Department of Mineralogy and Petrography. The Department was organized by Professor Józef Morozewicz (1865–1941) who chaired the Organizing...
متن کاملPetrography and geochemistry of the Kahrizbeyg intrusion, southwest of Zanjan
The Kahrizbeyg pluton is located northwest of Iran in Central Iran zone. It is emplaced into the Cretaceous limestones in which contact metamorphism has happened. Meanwhile, rock fragments of this pluton are found in conglomerate units of Early Oligocene Lower Red Formation. Therefore, the relative age of pluton is between Cretaceous and Oligocene. The Kahrizbeyg pluton consists of granite and ...
متن کاملGeochemistry and petrography of impact breccias and target rocks from the 145 Ma Morokweng impact structure, South Africa
Morokweng is a large, 145 Ma impact structure in the Northwest Province of South Africa. The impact origin of this structure and its melt rock has been confirmed by ample evidence of shock metamorphism in clasts within the melt rock and samples from granitoid basement below the melt body. The age of this structure is indistinguishable from the biostratigraphic age of the Jurassic-Cretaceous (J-...
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ژورنال
عنوان ژورنال: Meteoritics & Planetary Science
سال: 2014
ISSN: 1086-9379
DOI: 10.1111/maps.12352