| 000 -LEADER |
|---|
| fixed length control field |
01737nab a2200193 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
GSMBLIc |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
211130b ||||| |||| 00| 0 eng d |
| 041 ## - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
Einglish Language |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Sanders, John E |
| 9 (RLIN) |
13268 |
| 245 ## - TITLE STATEMENT |
|---|
| Title |
Origin of convoluted laminae |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
409-421p. |
| Other physical details |
Illustration |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Abstract<br/>Comparison of streaked-out “ripples” formed by the drag effects of a current passing over a watery, yet cohesive sediment bottom with convoluted laminae formed within beds of fine-grained sandstone suggests a common origin. Application of Bagnold's recent discoveries on the behaviour of cohesionless sediment in flowing fluids to the problem results in a modification of Kuenen's hypothesis of origin of the convolutions. According to the new interpretation, convolutions arise when formerly cohesionless sand grains become cohesive after deposition and respond to increased shearing due to higher current velocity by a décollementtype of adjustment with the plane or planes of adjustment located within, or in some cases at or below the base of the growing sandstone bed. Convolute “anticlines” in cohesive sand are thought to serve the same function as that played by current ripple-marks in cohesionless sand, i.e., they create additional bottom relief in order to increase the drag and restore equilibrium to the added shearing stress imposed by the current that cannot be counterbalanced by grain-to-grain encounters. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Physical geology |
| 9 (RLIN) |
184 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Sedimentation |
| 9 (RLIN) |
1766 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Formation |
| 9 (RLIN) |
12605 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Convoluted laminae |
| 9 (RLIN) |
13269 |
| 773 0# - HOST ITEM ENTRY |
|---|
| Host Biblionumber |
1909 |
| Host Itemnumber |
2197 |
| Place, publisher, and date of publication |
Herts Stephen Austin & Sons, Ltd 1960 |
| Other item identifier |
002545 |
| Title |
Geological magazine : Vol 97 Iss. 1-6 Year. 1960 |
| International Standard Serial Number |
00167568 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
|
| Call number suffix |
{082b} |
| Koha item type |
Article |
