Question

please answer (a) and (b). thank you

The hypothetical stratigraphic section on the following page shows a vertical sequence of strata. Assume that this section accumulated on a continent at a latitude of 42 (normally a temperate climate zone). The numbered boxes with rock symbols are described below: 1. Well sorted grains of crinoids, mollusks, and ooids cemented with calcite. 2. Very fine clay and silt particles with very thin laminations. 3. Lithology as described above but with isolated large pebbles, cobbles and boulders deforming and truncating underlying laminations. 4. Compressed and highly altered organic material. Rock is mostly Carbon with no recognizable organic fragments. 5. Bedded halite. 6. Very poorly sorted conglomerate with abundant large and smaller angular blocks and boulders of many different rock types in a matrix of poorly sorted sand, silt, and clay. A. Using the information presented in the stratigraphic section and in the descriptions of beds given above sketch a smooth paleotemperature curve showing climate change through the time represented by the rocks in the section. You should sketch this curve in the space labeled A. It would be easiest if you interpreted the paleoclimate represented by the strata before you started to sketch (please work in pencil so you can adjust your curve as you work). B. We will assume that the climate changes you interpreted were caused by variation in CO2 in the atmosphere. In the space labeled B, sketch a curve that shows how CO2 in the atmosphere would have to change to produce the changes in paleoclimate indicated by your sketch and the sedimentary column.

Answer 1

LOBAL TEM Highar ewer Col des Warmer 6 ぐ 1-0 2. t1tt