Question

BLOCK DIAGRAMS--Map with Cross-sections: 21 The figure below is a block diagram. The center space is a map view. The four sides are cross-sections. Once the map view is drawn, be sure to use all of the correct symbols and rock abbreviations to describe on the map what's seen in the cross-sections. A ruler or straight edge may be useful. [Hint: If you're having trouble, try folding down the side views to make a box ] LS GRN MAR 24. The Limestone is striking 25. Are these rock strata horizontal or tilted? 26. Is the Granite intrusion concordant or discordant ? 27, what type ofdip-slip fault is present ?- 28. What type of unconformity is present? and is dipping degrees to the -236-

Answer 1

Answer 23

SHL 1 S CoN) MAR a C OM

answer 24 :- the lime stone striking in WATER and is dipping 45 or less degree to the SURFACE

answer 25 :- these rock strata is TILTED

answer 26 :- A batholith is the largest of the intrusivebodies. They are larger than 100 square kilometers and usually form granite cores. ... There are two types of intrusive bodies that we are going to discuss 1)Discordant and 2) Concordant. A discordant igneous rock body cuts across the pre-exiting rock bed.

> the granite is intrusion discordant

answer 27 :- Dip-slip faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the faultis termed reverse. A thrust fault is a reverse fault with a dip of 45 degrees or less.

answer 28 :-

There are three basic types of contacts:

1. Depositional contacts, where a sediment layer is deposited over preexisting rock.
2. Fault contacts, where two units are juxtaposed by a fracture on which sliding has occurred.
3. Intrusive contacts, where one rock body cuts across another rock body.

> Unconformity Defined. An unconformity is the contact between sedimentary rocks that are significantly different in age or between sedimentary rocks and older, eroded igneous or metamorphic rocks. Unconformitiesrepresent gaps in the geologic record, periods of time that are not represented by any rocks.
Read more at http://www.geologyin.com/2015/10/types-of-unconformities.html#o4TtWdKuQiC4UqPt.99