VOLCANICLASTIC SEDIMENTATION IN AND AROUND AN ORDOVICIAN SUBAQUEOUS CALDERA, LOWER RHYOLITIC TUFF FORMATION, NORTH WALES

被引：0

作者：

FRITZ, WJ ^{[1
]}

HOWELLS, MF ^{[1
]}

REEDMAN, AJ ^{[1
]}

CAMPBELL, SDG ^{[1
]}

机构：

[1] BRITISH GEOL SURVEY,ABERYSTWYTH SY23 4BY,DYFED,WALES

来源：

GEOLOGICAL SOCIETY OF AMERICA BULLETIN | 1990年 / 102卷 / 09期

关键词：

Geology;

D O I：

10.1130/0016-7606(1990)102<1246:VSIAAA>2.3.CO;2

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Lower Rhyolitic Tuff Formation of Ordovician age in North Wales records the collapse, infilling, and subsequent resurgence of a volcanic caldera with an original diameter of about 15km. This volcanic center controlled patterns of volcaniclastic sedimentation, providing enough topographic relief for both a shallow-lagoon depositional basin within the caldera and a source of sediment derived from the rim. -from Authors

引用

页码：1246 / 1256

页数：11