Back خريطة جيولوجية Arabic Geoloji xəritə Azerbaijani Геоложка карта Bulgarian ভূতাত্ত্বিক মানচিত্র Bengali/Bangla Mapa geològic Catalan Geologická mapa Czech Geologische Karte German Γεωλογικός χάρτης Greek Mapa geológico Spanish Geoloogiline kaart Estonian

Geological map

Mapped global geologic provinces
Screenshot of a structure map generated by geological mapping software for an 8500 ft deep gas and oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir. Because gas floats above oil, the thin red contour line marks the gas/oil contact zone.

A geological map or geologic map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults, folds, are shown with strike and dip or trend and plunge symbols which give three-dimensional orientations features. Geological mapping is an interpretive process involving multiple types of information, from analytical data to personal observation, all synthesized and recorded by the geologist. Geologic observations have traditionally been recorded on paper, whether on standardized note cards, in a notebook, or on a map.[1]

Stratigraphic contour lines may be used to illustrate the surface of a selected stratum illustrating the subsurface topographic trends of the strata. Isopach maps detail the variations in thickness of stratigraphic units. It is not always possible to properly show this when the strata are extremely fractured, mixed, in some discontinuities, or where they are otherwise disturbed.

Digital geological mapping is the process by which geological features are observed, analyzed, and recorded in the field and displayed in real-time on a computer or personal digital assistant (PDA). The primary function of this technology is to produce spatially referenced geological maps that can be utilized and updated while conducting field work.[2]

  1. ^ Barnes, John; Lisle, Richard (2004). Basic Geological Mapping. Chichester, West Sussex PO19 8SQ, England: John Wiley & Sons Ltd. pp. 1–204. ISBN 978-0-470-84986-6.{{cite book}}: CS1 maint: location (link)
  2. ^ Kramer, John (2000). "Digital Mapping Systems for Field Data Collection". Digital Mapping Techniques '00 -- Workshop Proceedings. U.S. Geological Survey. Open-File Report 00-325.
From Wikipedia, the free encyclopedia · View on Wikipedia

Developed by Nelliwinne