CLAY MINERAL FORMATION IN SEA WATER BY SUBMARINE WEATHERING OF K-FELDSPAR
CLAY MINERAL FORMATION IN SEA WATER BY SUBMARINE WEATHERING OF K-FELDSPAR
复制标题
海水中钾长石海底风化形成的粘土矿物
DOI：
10.1346/ccmn.1966.0140120
复制
发表时间：
1966
影响因子：
2.2
通讯作者：
B. Martin
中科院分区：
文献类型：
--
作者：
R. Rex;B. Martin
一组花岗闪长岩样本是通过疏浚从加利福尼亚州蒙特利湾卡梅尔和蒙特利海底峡谷约1000米深处收集的。每种花岗闪长岩板块的一个表面都风化并被海洋生物包裹。风化作用在地表最大，渗透深度约20 cm，选择性地将长石转变为粘土。钾长石蚀变最为严重。矿物选择性攻击、风化深度较浅、生物生长限制在风化表面以及区域地质环境解释表明，样品来自基岩破碎，该花岗闪长岩可能在海洋环境中风化。
A suite of granodiorite samples was collected by dredging from depths of about 1000 m from the walls of Carmel and Monterey submarine canyons, Monterey Bay, California. One surface of each of the various granodiorite slabs was weathered and encrusted with marine organisms. The weathering is maximum at the surface and penetrates to a depth of about 20 cm and selectively alters the feldspars to clay. Potassium feldspars are most severely altered. Mineral selective attack, shallow depth of weathering, restriction of biological growth to weathered surfaces, and regional geological setting are interpreted to mean that the samples were broken from bedrock and that this granodiorite probably weathered in the marine environment.