干旱区生态环境知识资源中心(Arid): Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile

Arid

DOI	10.1130/G49426.1
	Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile
	Schultz, Peter H.; Harris, R. Scott; Perroud, Sebastian; Blanco, Nicolas; Tomlinson, Andrew J.
通讯作者	Schultz, PH (corresponding author)，Brown Univ, Dept Earth Environm & Planetary Sci, POB 1846, Providence, RI 02912 USA.
来源期刊	GEOLOGY
ISSN	0091-7613
EISSN	1943-2682
出版年	2022
卷号	50 期号:2 页码:205-209
英文摘要	Twisted and folded silicate glasses (up to 50 cm across) concentrated in certain areas across the Atacama Desert near Pica (northern Chile) indicate nearly simultaneous (seconds to minutes) intense airbursts close to Earth's surface near the end of the Pleistocene. The evidence includes mineral decompositions that require ultrahigh temperatures, dynamic modes of emplacement for the glasses, and entrained meteoritic dust. Thousands of identical meteoritic grains trapped in these glasses show compositions and assemblages that resemble those found exclusively in comets and CI group primitive chondrites. Combined with the broad distribution of the glasses, the Pica glasses provide the first clear evidence for a cometary body (or bodies) exploding at a low altitude. This occurred soon after the arrival of proto-Archaic hunter-gatherers and around the time of rapid climate change in the Southern Hemisphere.
类型	Article
语种	英语
开放获取类型	Green Submitted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000749744100001
WOS关键词	HYPERARID CORE ; IMPACT ; ALTIPLANO ; SAMPLES ; ZIRCON
WOS类目	Geology
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376469
作者单位	[Schultz, Peter H.] Brown Univ, Dept Earth Environm & Planetary Sci, POB 1846, Providence, RI 02912 USA; [Harris, R. Scott] Fernbank Sci Ctr, Dept Space Sci, 156 Heaton Pk Dr, Atlanta, GA 30307 USA; [Perroud, Sebastian] Univ Santo Tomas, Escuela Geol, Ave Ejercito 146, Santiago, Chile; [Blanco, Nicolas; Tomlinson, Andrew J.] Serv Nacl Geol & Mineria, Ave Santa Maria 0104, Santiago, Chile
推荐引用方式 GB/T 7714	Schultz, Peter H.,Harris, R. Scott,Perroud, Sebastian,et al. Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile[J],2022,50(2):205-209.
APA	Schultz, Peter H.,Harris, R. Scott,Perroud, Sebastian,Blanco, Nicolas,&Tomlinson, Andrew J..(2022).Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile.GEOLOGY,50(2),205-209.
MLA	Schultz, Peter H.,et al."Widespread glasses generated by cometary fireballs during the late Pleistocene in the Atacama Desert, Chile".GEOLOGY 50.2(2022):205-209.