Which type of ore deposit originated before there was free oxygen in the atmosphere? a. banded iron ...

Author Question: Which type of ore deposit originated before there was free oxygen in the atmosphere? a. banded iron ... (Read 87 times)

ishan

Hero Member
Posts: 546

on: Jul 15, 2018

Which type of ore deposit originated before there was free oxygen in the atmosphere?
a. banded iron formation
b. manganese nodules
c. colcanogenic copper
d. gold placer deposits
e. bauxite

Question 2

What kind of process produces banded iron formations?
a. sedimentary
b. hydrothermal
c. igneous
d. weathering
e. metamorphic

Laurenleakan

Sr. Member
Posts: 309

Reply #1 on: Jul 15, 2018

Answer to Question 1

A

Answer to Question 2

A

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