Metamorphic Rocks change I Agents of Metamorphism I

Metamorphic Rocks “change”

I. Agents of Metamorphism

I. Agents of Metamorphism • A. Heat • B. Pressure • C. Chemically Active Fluids

II. Types of Metamorphism • A. Contact “baking and CAF”

II. Types of Metamorphism • A. Contact • B. Regional “heat, pressure, CAF”

II. Types of Metamorphism • A. Contact • B. Regional • C. Dynamic “along fault zones”

A mylonite formed from dynamic metamorphism

III. Metamorphic Rock Types A. Foliated (regional meta. ) B. Non Foliated (regional or contact meta. )

A. Foliated

A. Foliated foliated rocks require heat, pressure, and Chem. Active fluids. Parent Rock >>>> Meta. Rock

A. Foliated foliated rocks require heat, pressure, and Chem. Active fluids. Parent Rock >>>> Meta. Rock Granite………………….

A. Foliated foliated rocks require heat, pressure, and Chem. Active fluids. Parent Rock >>>> Meta. Rock Granite…………………. Gneiss

A. Foliated Parent Meta. Rock >>>> Rock Shale >>>>

A. Foliated Parent Meta. Rock >>>> Rock Shale >>>> Slate

A. Foliated Parent Meta. Rock >>>> Rock Shale >>>> Slate……Phyllite

A. Foliated Parent Meta. Rock >>>> Rock Shale >>>> Slate……Phyllite…. . Schist

A. Foliated Parent Meta. Rock >>>> Rock Shale >>>> Slate……Phyllite…. . Schist…. . Gniess

A. Foliated Parent Meta. Rock >>>> Rock Low Grade………………High Grade Shale >>>> Slate……Phyllite…. . Schist…. . Gniess

A. Foliated Low Grade………………High Grade Slate……Phyllite…. . Schist…. . Gniess

A. Non Foliated Need either Heat and CAF, or H, P, CAF Parent Meta. Rock >>>> Rock Limestone >>>>

A. Non Foliated Parent Meta. Rock >>>> Rock Limestone >>>> Marble

A. Non Foliated Parent Meta. Rock >>>> Rock Sandstone >>>>

A. Non Foliated Parent Meta. Rock >>>> Rock Sandstone >>>> Quartzite

A. Non Foliated Parent Meta. Rock >>>> Rock Mafic Ign Rock >>>>

A. Non Foliated Parent Meta. Rock >>>> Rock Mafic Ign Rock >>>> Soapstone, Amphibolite, or Greenstone

A. Non Foliated Parent Meta. Rock >>>> Rock Bituminous >>>> Coal

Parent Meta. Rock >>>> Rock Bituminous >>>> Coal Anthracite Coal

A. Non Foliated Parent Meta. Rock >>>> Rock ONLY HEAT AND CAF Shale …………. Hornfels

The Rock Cycle