Theory 1: Tension forces a) Tension forces act on the layers of rock. b) Gradually two parallel faults appear and the central block begins to subside (sink). c) Land in between sinks in forming a rift valley. The land on either sides stays in place. After subsidence a depression with steep fault scarp sides i.e.
Earth Science 11; Geologic Time Unit Review Multiple Choice 1) An unconformity is a buried ________. A) fault or fracture with older rocks above and younger rocks below B) surface of erosion separating younger strata above from older strata below C) fault or fracture with younger strata above and older strata below D) surface of erosion with older strata above and younger strata below Answer: B 2) The white arrow in this cross-section points to an unconformity (black line). What kind of unconformity is it? A) disconformity B) angular unconformity C) nonconformity D) dike Answer: B 3) A datable mineral crystal contains 40% parent isotope. How many half-lives have passed since the crystal formed?
Surface textures vary. The soil is generally alkaline. Elevations range from 2,500 feet to more than 8,749 feet at Guadalupe Peak. Although most of Texas is located on flat plains or rolling plains, there are mountains in far West Texas. The highest point in the state is Guadalupe Peak at 8,749 feet above sea level.
a. strain buildup only b. location of foci c. magnitude of P-waves [pic] d. reoccurrence rates of earthquakes in an area and the rate of strain buildup 2. What are most earthquakes associated with? a. rift valleys b. mid-ocean ridges c. divergent plate boundaries [pic] d. plate boundaries 3. At what point in the graph would a rock be permanently deformed? [pic] a. at the start of the stress [pic] b. past
Saint Helen a composite volcano (or stratovolcano), a term for steep sided, often symmetrical cones constructed of alternating layers of lava flows, ash and other volcanic debris. Composite volcanoes tend to erupt explosively pose considerable danger to nearby life and property. Before 1980, snow capped, gracefully symmetrical Mt. Saint Helens was known as the “Fujiyama of America.” Mt. Saint Helens, other active Cascade volcanoes, and those of Alaska form the North
Using the Pythagorean Theorem, solve for the missing sides. ____________10) ___________ 11) Find the value of x and y in each special right triangle. Give final answers in most simplified form. 12) x = _____y = _______ 13) x = ______y = ______ 14) x = _____y = _______ REGULAR POLYGONS 15) Given a hexagon with apothem length of [pic]cm. Determine the following.
Discussion The recharge of the lower aquifer is predominately from the NW where the land elevation is higher and steeper (see map). At the area of
1.1 Turn on each layer one at a time and look closely at each map. Write the name of each layer and the map title in the spaces that follow Names=bold Titles= regular Names Titles 1. Chiles Chiles Peppers 2. Coyotes Coyotes 3. Geographers Southwest Division of the Association of American Geographers 4.
(6p − 5)2 The figures below are squares. Find an expression for the area of each shaded region. Write your answers in standard form. 10. 11.
The size of the Grampians national park is 167,000 hectares. 4. Today's Grampians mountain range lay under shallow seas millions of years ago. Over the centuries, heat and pressure caused the solidification of the sandy bottom into great slabs of sandstone which, disturbed by tectonic forces, were forced upwards to become the jagged peaks we see today in Grampians National Park. 5.