r the Geologic History of Stern Pennsyly a geologkc map of Pennsylvania below. T

Question

r the Geologic History of Stern Pennsyly a geologkc map of Pennsylvania below. The green-coloeed areas are cx 190 million years old. Pakomic and Precambrian rocks are more than 252 Date ACTIVITY Name: Review FIGURE S.TS. Then seudy che portion million-year-old Mcsooic sand and mud red-colored arcas are bodies of uale alour wcre years old years old and coloeed pale bwown. dd pahae were depusited in lakos, sireams, and fields of a long, s sedimentary A. Based on their geometries (as viewed from above, in map view), what kind of igncous bodies on the map are eir gometries (as viewed from above, in map vicw), what kind of igneous bodies on the map are labeled B (moe answer is possible)? than one C REFLECT& DISCUSS If years ago (fwhen the bodics of igneous rock were laval) then what dhe wou streams, lakes, and fields? Explain your reasoning you could have seen the landscape that existed in this part of Pennsylvania about 200 million uld you have seen on the landscape besides valleys 152

Explanation / Answer

A. In the given point, the area is red and hence it is basalt now when exposed on to the surface then it is definitely a igneous body here it is sill. From the information given in the question. The age of basalt is 190 million years means it is younger to all.

B. At the given point, the same thing is observed. Both at A and B the sill type of body is observed from the map. The fissure type of eruption is happened here. The Mesozoic sedimentary rock which are older are intruded by yougher igneous eruption which is fissure type hence it is sill body.

The drainage basin can be modified here because of sedimentary rocks present at the base and basaltic eruption intrudes at some higher level. The drainage is complete as all the water is runoff from the basalt and entered to the sedimentary basin.

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.