10,372
edits
Changes
Jump to navigation
Jump to search
Line 89:
Line 89: − Three main elements are commonly found in a geological map is Map Units, Contacts and faults, Strike and Dip. + − '''Map Units''' show different from rock type and other earth materials,showing with the specific color and symbol.+ − + − + − '''Contacts''' between two maps showing where the different units of the types of rocks bordering the other rock types.If the border is cear, it will be showing with a thick line,but If the border is uncertain, only showing by the dotted line. + − + − + − '''Faults''' is the location where there is a transfer plate, on a geological maps, the fault line indicates where an experienced unit slid, pushed up or dropped down relative to the binder adjacent units. + − + − − '''Strike and Dip''' symbols show the orientation of rocks to the field of fracture. Long lines show the strike, and the short line is dip. Dip is usually also accompanied by a number and direction, which shows how much the angle of outcrop of rock. − [[File:8.jpg|250px|thumbnail|center|Figure 8 Strike and Dip<ref>http://www.state.nj.us/dep/seeds/rocksym.htm</ref>]]
→How To Read Geological Maps
==How To Read Geological Maps==
==How To Read Geological Maps==
[[File:5.jpg|250px|thumbnail|{{figure number|5|}}Lithology symbols<ref>http://www.bssaonline.org/content/92/7/2704/F14.large.jpg</ref>]]
[[File:6.jpg|250px|thumbnail|{{figure number|6|}}Contacts in geological maps<ref>http://college.cengage.com/geology/resources/protected/physicallab/thelab/geologicmaps/activities/activity1/activity1.htm</ref>]]
[[File:5.jpg|250px|thumbnail|center|Figure 5 Lithology Symbols<ref>http://www.bssaonline.org/content/92/7/2704/F14.large.jpg</ref>]]
[[File:7.jpg|250px|thumbnail|{{figure number|7|}}Faults<ref>http://www.maine.gov/dacf/mgs/pubs/mapuse/surficial/surf-read.htm</ref>]]
[[File:8.jpg|250px|thumbnail|{{figure number|8|}}Strike and Dip<ref>http://www.state.nj.us/dep/seeds/rocksym.htm</ref>]]
Three main elements commonly found in a geological map are map units, contacts and faults, and strike and dip.
[[File:6.jpg|250px|thumbnail|center|Figure 6 Contacts in Geological Maps<ref>http://college.cengage.com/geology/resources/protected/physicallab/thelab/geologicmaps/activities/activity1/activity1.htm</ref>]]
* Map units show different rock types and other earth materials, with the specific color and symbol.
* Contacts between two maps showing where the different units of the types of rocks bordering the other rock types. A clear border is denoted by a thick line; an uncertain border by a dotted line.
* Faults are the location of a transfer plate. On a geological map, the fault line indicates where an experienced unit slid, pushed up, or dropped down relative to the binder adjacent units.
[[File:7.jpg|250px|thumbnail|center|Figure 7 Faults<ref>http://www.maine.gov/dacf/mgs/pubs/mapuse/surficial/surf-read.htm</ref>]]
* Strike and dip symbols show the orientation of rocks to the field of fracture. Long lines show the strike, short lines show dip. Dip is usually also accompanied by a number and direction, which shows how much the angle of outcrop of rock.
==References==
==References==
{{reflist}}
{{reflist}}