please help me to understand sheer (1 poin) Which of the following rocks formed

Question

please help me to understand

sheer (1 poin) Which of the following rocks formed during the Great Oxygenation Event? a. Carbonates (e g. Limestone) b. Iridium Deposits 1. c. Coprolites d Banded Iron Formations 2. (1 poiet) According to the Wilson Cycle, what is the likely next step in the tectonic history of New Jersey? Volcanic islands will form offshore as the new Atlantic Plate begins to subduct beneath North America New Jersey will soon be in a major collision orogen with high glaciated peaks dominating the landscape. a. b. c. New Jersey will fall off into the Atlantic Ocean. d. New Jersey will be on the new Atlantic Plate as a young ocean basin develops between Appalachia and the rest of North America GEOLOGIC CROSS SECTION OF VIRGINIA Acpalachian Plateaus Coastal Plain valey and Riege/ B-Rape Biue Ridge Cartcrales with sandstone ndges Cambrian clasics Crystaline besement and schiats Clavs and shaes Adapted from Geology of Virginia by R. V. Districh Cartography by Sue Byrom 3. (l point) Ordovician rocks in the Valley and Ridge region of Virginia and West Virginia consist mostly of shale and limestone with some greywacke sandstone. The source area for the sediment deposited during this time was a. An accretionary wedge b. A high desert c. A shallow sea on the opposite side of the volcanic arc from the subduction zone d. In the volcanic are mountain range

Explanation / Answer

The Great Oxygenation event resulted in the formation of " BANDED IRON FORMATION " .This happened because the iron was soluble in water during the reduction phase and as the oxygentation phase started the iron precipitated and deposited as Banded Iron Formations "BIF's". The likely step in the tectonic history of New Jersey acc. to wilson cycle is- (a) Volcanic island will form offshore as the new atlantic plate begins to subduct beneath north america. ---as the atlantic ocean is now mature and will then start dying out buy subducting on sides The source rock deposited during that time would be- (a)accretionary prism --because the greywackes are formed in high turbidity condition which are available here because of steep slope of trench

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

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