SOIL GENESIS ON FELSIC ROCKS IN THE ST. FRANCOIS MOUNTAINS. I. THE ROLE OF SAPROLITE AND ITS INFLUENCE ON SOIL PROPERTIES.

腐岩 地质学 正长石 地球化学 斑晶 风化作用 石英 长石 火山岩 火山 古生物学
作者
Michael Aide,Tracy Alexander,Lloyd Heberlie,C. Doug Smith,Clayton Sneed,Phillip Statler,David J. Wildharber
出处
期刊:Soil Science [Lippincott Williams & Wilkins]
卷期号:164 (6): 428-439 被引量:4
标识
DOI:10.1097/00010694-199906000-00007
摘要

One soil profile from Taum Sauk Mountain and two soil profiles from Mudlick Mountain in the St. Francois Mountains of Southeast Missouri were investigated to determine if the soils evolved from the underlying rock unit and to characterize the role of saprolite on soil genesis. Taum Sauk Mountain is composed of rhyolite lava and ash flow of the Van East Group. The rock is quartz and orthoclase phenocrysts in an orthoclase groundmass. Mudlick Mountain consists of rock composed of orthoclase, oligoclase, and a minor amount of quartz phenocrysts in a groundmass of quartz and orthoclase. The shallow Aquic Hapludult formed on the summit of Taum Sauk Mountain shows no evidence of saprolite, whereas the two Typic Paleudalfs formed on Mudlick Mountain rest on a thick layer of saprolite. The presence of minerals in the host rock that weather more easily is largely responsible for the development of the saprolite on Mudlick Mountain. The very strongly acid Typic Paleudalfs have textures ranging from cobbly silt loam to cobbly sandy loam for the eluvial horizons, whereas the argillic and C horizons are generally fine or clayey-skeletal. The extremely acid Aquic Hapludults have a fine-silty texture. The clay mineralogy is mixed, with hydroxy-Al interlayered vermiculite and hydrous mica prominent in the eluvial horizons and kaolinite dominating the Bt and C horizons. The aluminum hydroxide potentials of soil solutions extracted from selected horizons are saturated or slightly supersaturated with respect to kaolinite. Elemental analysis demonstrates that the soil and saprolite originate from the same parent material and that elemental depletion is important to the formation of the saprolite. Iron oxides represent nearly all of the total Fe, and Fe is correlated highly with clay content. The rare earth elements are more abundant in the soil than in the host rock. The weathered thin loess capping is suggested as the source of the rare earth elements.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
Asteria完成签到,获得积分10
2秒前
仲达发布了新的文献求助10
2秒前
2秒前
能干的邹完成签到 ,获得积分10
2秒前
所所应助王梦豪采纳,获得10
3秒前
3秒前
3秒前
Jasper应助董豆豆采纳,获得10
4秒前
叽里呱啦完成签到 ,获得积分10
5秒前
坦率的路人完成签到,获得积分10
5秒前
清脆的土豆完成签到,获得积分0
6秒前
易逢春发布了新的文献求助10
6秒前
7秒前
领导范儿应助shinn采纳,获得10
8秒前
内向寒云发布了新的文献求助10
8秒前
8秒前
Mr.Jian完成签到,获得积分10
9秒前
9秒前
猛猛冲完成签到,获得积分10
10秒前
研友_ZGjRjn发布了新的文献求助10
10秒前
smottom应助斯文的傲珊采纳,获得10
11秒前
淦淦完成签到,获得积分20
11秒前
13秒前
打打应助欣慰的乌冬面采纳,获得10
14秒前
SUN应助宋宋宋2采纳,获得10
14秒前
16秒前
大梅子清清淡淡完成签到,获得积分10
16秒前
乐乐应助carnationli采纳,获得10
16秒前
19秒前
123456发布了新的文献求助10
21秒前
22秒前
22秒前
shinn发布了新的文献求助10
22秒前
科研通AI2S应助wjx采纳,获得10
24秒前
科研通AI2S应助之一采纳,获得10
24秒前
大模型应助wjx采纳,获得10
24秒前
大个应助wjx采纳,获得20
24秒前
CipherSage应助wjx采纳,获得10
24秒前
科目三应助wjx采纳,获得10
24秒前
高分求助中
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Effective Learning and Mental Wellbeing 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3975339
求助须知:如何正确求助?哪些是违规求助? 3519670
关于积分的说明 11199199
捐赠科研通 3256002
什么是DOI,文献DOI怎么找? 1798043
邀请新用户注册赠送积分活动 877386
科研通“疑难数据库(出版商)”最低求助积分说明 806305