Tor와 Joing의 關係 : 慶州 南山을 中心으로 = Some Relationships between the Tor and the Joint in Mts. Nam

다국어 초록 (Multilingual Abstract)

The purpose of this study is to examine the relation between tor and geological structure. 20 tors and 40 joints were checked in the study area, and measured the longest diameters in tors to know the relation between tor direction and joint strike by clinometer with the field survey of 6 times from March to Apri, 1985. Rock types of study areas are Bulgugsa Granite.
Data were illustrated by the rose diagram(Fig. 2, 3), tor direction man(Fig. 4), joint map(Fig. 5), and spearman's correlation coefficients were adapted.
Majority of tors occur on ridge(70%) and nest on slopes(30%). tors seldom exceed 15m and most tors rise 0∼10m(95%) above their surroundings. Hardness of tors show hammer bounce(50%) mostly and next hammer break(27.5%), hand break(22.5%). but some outcrops have the variety of hardness partially. Tors are composed of rounded joint block(50%) and semirounded(45%). 3types of tors are recognized as follows: Tower(70%), Castle(25%) and Table-hill(5%).
The direction of the longest diameters in tors are grouped into N1-5W·NS·N1-5E(25%), N76-85W(16.7%), N66-75E(16.7%) N6-15E(8.3%), N16-25W(8.3%), N46-55W(8.3%), N6-15E(8.3%), EW(8.3%), And the joint strikes in study area are grouped into N1-5W·NW·N1-5E(17.5%), N16-25E(15%), N16-25W(10%), N66-75E(10%), N76-85W(7.5%), N36-45E(7.5%), EW(7.5%), N26-35W(5%), N86-89W(5%), N26-35E(5%), N86-89E(5%). The main direction of tors corresponding with most prevalent joint strikes(N1-5W·NS·N1-5E) and UNYANG fault line(NS, NNE) developed in the study area. Spearman's correlation coefficients between the joint frequency and the tor direction are 0.64(Table2).
These facts indicate that the joint tells on the tor formation essentially. Especially the joint strikes N1-5W·NS·N1-5E have played major role in tor development.

목차 (Table of Contents)

• Ⅰ. 序 論
• 1. 硏究目的 및 方法
• 2. 硏究地域의 地形·地質
• Ⅱ. Tor와 Joint의 關係
• 1. Tor와 一般的 特徵
• 2. Tor와 方向性
• 3. Joint Strike
• 4. Tor와 Joint의 關係
• Ⅲ. 結 論