GEO_416M_2011SP_3rd_exam_key

GEO_416M_2011SP_3rd_exam_key - GEO 416M, Sedimentary Rocks...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
GEO 416M, Sedimentary Rocks Exam 3, April 13 - 2011, Carbonate Sediments and Rocks 1 Name_______________________________ UT EID______________________________ Total 47 multiple-choice questions: 43 questions, each worth 2 points; 4 questions, each worth 3 points; total 98 points. 2 extra points awarded for turning in the paper exam questions with name and correct UT EID written on front page 1) Which of the following pair is the major control for siliciclastic basin response (equilibrium) time scale? a) Length of basin – Depth of ocean b) Depth of ocean – Aggradation rate c) Aggradation rate – Transport capacity d) Transport capacity – Length of basin 2) Which of the following pair is the major control for carbonate basin response (equilibrium) time scale? a) Length of basin – Depth of ocean b) Depth of ocean – Aggradation rate c) Aggradation rate – Transport capacity d) Transport capacity – Length of basin 3) The two primary carbonate minerals being formed in modern carbonate settings are: a) Calcite and dolomite b) Aragonite and low-magnesium calcite c) Aragonite and dolomite d) Aragonite and high-magnesium calcite 4) Which is the major reason for few modern reefs in the coastal waters offshore of India? a) Water is too cold for reefs to develop b) Aragonite concentration in ocean is too low for reefs to develop c) Terrigenous input (clastics) is too excessive for reefs to develop d) Pollution is too excessive for reefs to develop 5) Which is NOT one of the main factors influencing rate of chemical weathering a) Mineral size b) Mineralogy c) Temperature d) Evaporation 6) Which is NOT an environment for Anhydrite develops a) High temperature b) Burial in depth c) Humid environment d) Evaporative environment 7) Which is NOT correct for Cave and Hot Spring carbonate environments? a) Cave – groundwater / dissolution b) Cave – Vadose zone c) Hot Spring – groundwater / precipitation d) Hot Spring – groundwater / recharge 8) Which is the correct evaporation sequence? a) Carbonate-Gypsum-Halite-Mg Salt b) Carbonate-K Salt-Halite-Gypsum c) Carbonate-Halite-Gypsum-Mg Salt d) Carbonate-Gypsum-K Salt-Halite 9) How much initial seawater should evaporate to get NaCl? a) 40%-50% of the initial volume b) 50%-80% of the initial volume c) 80%-90% of the initial volume d) 90%-95% of the initial volume 10) The total weight concentration of salt in the Earth's Oceans is most nearly: a) 3.5% b) 6.8% c) Less than 1% d) Greater than 10% 11) How long does it take to double the current saltiness in the ocean (i.e., current 2% to 4 %) if dissolved Chloride concentration in rivers is 0.001%? (Ocean’s current Chloride
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/19/2012 for the course GEO 416M taught by Professor Staff during the Spring '08 term at University of Texas.

Page1 / 7

GEO_416M_2011SP_3rd_exam_key - GEO 416M, Sedimentary Rocks...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online