The Blake River Megacaldera Complex is a giant subaqueous caldera cluster or a nested caldera system that spans across the Ontario-Quebec border in Canada.
The caldera complex is around 2700 million years old, consisting of a series of overlapping calderas of various ages and sizes. It lies within the southern zone of the Abitibi greenstone belt of the Superior craton and has an area of 3,000 km2.
The Blake River Megacaldera Complex has been a centre of major interest since 2006 with numerous excursions at the international, national and local level. It is a world-class metallotect with respect to both hydrothermal Cu-Zn massive sulfides and gold-rich massive sulfides.
Read more about Blake River Megacaldera Complex: Structure and Geographical Extent
Famous quotes containing the words blake, river and/or complex:
“I askèd a thief to steal me a peach
He turned up his eyes
I ask’d a lithe lady to lie her down
Holy & meek she cries—
As soon as I went
An angel came.
He wink’d at the thief
And smild at the dame—
And without one word said
Had a peach from the tree
And still as a maid
Enjoy’d the lady.”
—William Blake (1757–1827)
“It is like watching a nation busily engaged in heaping up its own funeral pyre.... As I look ahead, I am filled with foreboding. Like the Roman, I seem to see “the River Tiber foaming with much blood.””
—J. Enoch Powell (b. 1912)
“We must open our eyes and see that modern civilization has become so complex and the lives of civilized men so interwoven with the lives of other men in other countries as to make it impossible to be in this world and out of it.”
—Franklin D. Roosevelt (1882–1945)