Chapter 14, Mid-Continent Anticlines and Domes (HW 12)
Each answer worth 2 points unless otherwise specified. 28 points total.
Please use blue type for your answers (type anywhere on the blue line and the type should be
blue and bold).
1) Two primary crystalline rock types form the crystalline-cored, mid-continent anticlines
and domes structural province. One of them is the crystalline shield. What is the other
crystalline rock type?
sedimentary
2) In what state are the Adirondack Mountains located?
New York
3) The Adirondack Mountain landscape formed initially between
1.3
and
1
million years
ago.
4) True or false. The Adirondack Mountains form the largest state park in the contiguous
United States.
true
5) In what part of the Adirondacks are the highest peaks located? Is it the northwest,
northeast, southwest, or southeast?
North east
6) Name the rock/sediment type that forms the Tug Hill Plateau.
sedimentary
6b) State whether the following statement true or false. There is evidence that active
faults surround the Tug Hill Plateau.
true
7) What is the origin of the many lakes in the Adirondacks?
Glacial erosion
8) What visual evidence is there for recent fault activity in the Adirondacks?
Crystal
uplift
9) What present-day area might the St. Francois Mountains have resembled some 500 my
ago when sedimentary rocks of the interior platform were first being deposited above the
rocks of the crystalline shield?
Yellowstone
10) What present-day national park might the St. Francois Mountains have looked like
some 1.4 billion years ago?
Yellowstone
11) What is a shut-in as described in the St. Francois Mountains?
A place where the
rivers breadth is limited by hard rock that is resistant to erosion.
12) Name an example of a shut-in in the St Francois Mountains
Johnson shut ins
