The textures, formation and dynamics of rare high-MgO komatiite pillow lavas
The textures, formation and dynamics of rare high-MgO komatiite pillow lavas
复制标题
稀有高MgO科马提岩枕状熔岩的结构、形成和动态
DOI:
10.1016/j.precamres.2020.105729
复制
发表时间:
2020
影响因子:
3.8
通讯作者:
Staude
中科院分区:
文献类型:
--
作者:
Staude
Pillow lavas are an abundant morphological lava type both on Earth and on some extraterrestrial bodies. We examine pillows from Kambalda (Western Australia) komatiites, that uniquely preserve pillow necks, inter-pillow cavities, and internal crusts. Our study is the first description of true pillows from an Archaean high-MgO (~31%) komatiite. Their size ranges from 0.5 to 5 cm and most have equal vertical and horizontal axes. Due to very low melt viscosities (~0.01 – 0.1 Pa s), these komatiite pillows are one to two orders of magnitude smaller than modern basaltic counterparts. True high-MgO komatiites, such as those at Kambalda, require a low flow rate, potentially found on distal flow edges. Such low flow rates are in conflict with the high flow velocities generally assumed for komatiites, and hence explains the rarity of komatiite pillow lavas.
登录
查看更多内容
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
S. Staude;S. Barnes;M. Vaillant
通讯作者:
M. Vaillant
DOI:
--
发表时间:
1980
期刊:
影响因子:
--
作者:
E. Hanski
通讯作者:
E. Hanski
DOI:
--
发表时间:
1982
期刊:
影响因子:
--
作者:
I. B. Fridleifsson;H. Furnes;F. Atkins
通讯作者:
F. Atkins
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
E. Nisbet;M. Bickle;Alex Martin
通讯作者:
Alex Martin
影响因子:
2.9
作者:
J. G. Jones
通讯作者:
J. G. Jones