1 “... are distinguished depending on the heat flow rate: 1) at a geothermal gradient near to an average terrestrial...”

2 Table of Contents: “...1 Fluids, Pressures, and Gradients -- The Nature of Fluids -- Pressures and Fluids -- Conversion...”

3 Table of Contents: “... -- The Adirondack Mountains, New York State, USA -- Heat flow and thermal gradients in continental crust -- 9...”

4 “... sediments, oil and gas, and through the action of lightning strikes. Temperature gradients are typically...”