BASIN PROPERTIES AND POSTGLACIAL EROSION RATES OF MINOR MORAINES IN IOWA

被引：15

作者：

BURRAS, CL ^{[1
]}

SCHOLTES, WH ^{[1
]}

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,DEPT AGRON,AMES,IA 50011

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1987年 / 51卷 / 06期

关键词：

EROSION - Evaluation - GEOLOGY - Stratigraphy - PARTICLE SIZE ANALYSIS;

D O I：

10.2136/sssaj1987.03615995005100060025x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Two minor moraine basins in Story County, Iowa, were examined to determine the extent and effect of postglacial erosion on the present landscape and stratigraphy. Minor moraines are subtle repeating ridge and valley landforms with relief of approximately 2 m. The stratigraphy was examined in this study using grid and transect borings. A mantle of locally derived postglacial sediment blanketed the Late Wisconsinan till in both basins. In places, a strata of coarse diamicton separated the till and sediment. The postglacial sediment was identified primarily on particle size distribution and bulk density.

引用

页码：1541 / 1547

页数：7

共 19 条

[1]

[Anonymous], 1951, USDA HDB, V18

[2]

DANIELS RB, 1966, 3 IOW STAT U ENG RES

[3]

ELSON JA, 1957, GEOL SOC AM BULL, V68, P1721

[4] ICE-DISINTEGRATION FEATURES IN WESTERN CANADA [J].

GRAVENOR, CP ;

KUPSCH, WO .

JOURNAL OF GEOLOGY, 1959, 67 (01) :48-&

[5]

GWYNNE C, 1951, GEOL SOC AM BULL, V62, P233, DOI 10.1130/0016-7606(1951)62[233:MMISDA]2.0.CO

[6]

[7]

GWYNNE CS, 1941, P IOWA ACAD SCI, V48, P289

[8]

HALLBERG GR, 1978, IOWA GEOL SURV TECH, V8, P76

[9]

Kemmis T.J., 1981, IOWA GEOL SURV GUIDE, V6

[10] METHODS OF MAKING MECHANICAL ANALYSES OF SOILS [J].

KILMER, VJ ;

ALEXANDER, LT .

SOIL SCIENCE, 1949, 68 (01) :15-24

← 1 2 →