Geological Structures and Maps: A Practical Guide
Care is taken to define terms rigorously and in a way that is in keeping with current professional usage. Photographs of structures in the field are included to emphasize the similarities between structures at outcrop scale and on the scale of a map.
This book is designed to be read without tutorial help alongside fieldwork. Worked examples are given to assist with the solution of the exercises. The maps used in exercises have been chosen to provide all of the realism of a survey map without the huge amount of data often present, so a student can develop skills without becoming overwhelmed or confused. In particular emphasis is placed throughout on developing the skill of three-dimensional visualisation so important to the geologist.
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angle of dip angle of plunge antiform apparent dip axial plane axial surface trace batholith boreholes calculated Carboniferous classiﬁcation coal seam contour lines country rock curvature cut-off lines cylindrical folds deduce dextral dip direction dip separation direction of dip direction of plunge displaced dyke example fault plane fold axis folded surface foliation foot wall geological boundaries geological contact geological map Geological Structures geological surface ground surface hanging wall heave height hinge points horizontal igneous rock interlimb angle isobaths layering limbs limestone line of intersection line of outcrop map Fig map in Fig map shows Margam Park metamorphic metamorphic rocks metres mudstone non-cylindrical folds oblique outcrop pattern parallel periclinal folds planar plunge direction Precambrian PROBLEM rock units scale sedimentary rocks sediments sequence shape slope strata stratigraphic strike line strike separation Structural Geology structure contours surface Fig surface of unconformity synclines synform topographic contours vertical separation vertical thickness