EXPLORATION 1. Geological Mapping

EXPLORATION 1. Geological Mapping

1. WHY?

   • IDg & recording characteristics & distrib of rock units @/near surface
     • Surface distrib
     • orientation
     • inter-relationship
   • determines availability of mineral

2. TYPES

   • outcrop/bedrock map
     • estd in field
     • Shows actual perimeters of bedrock @ surface
   • Interpretive map
     • interps geol based on evidence = X directly observed
     • Guess of underground

3. REFERENCING SYSTEM

   • Lat-Long
     • tranverse globe
   • UTM
     • "universal tranverse mercator"
     • Rect grid -> UTM zones
   • Metes & Bounds
     • Ref to specific lines & meridian lines
     • Shows structural fts & minimal deposits & fossil location

4. SCALES

   • Fractional
   • Graphic

5. NECESSARY INFO TO DEVP MAP

   • Structural fts
   • Mineral deposits
   • Fossil localities

6. INDIRECT EVIDENCE

   • Aerial photography
   • Distant observations
   • Geophys data
   • Geochem data