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Dr Alan Channing

Hot spring environments and ecosystems through time
Hot Springs & Fossils
Active Hot Spring Areas
Quaternary Deposits
Tertiary Deposits
McGinness Hills NV
Hasbrouck Mtn NV
Mesozoic Hot Springs
Palaeozoic Hot Springs
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Tertiary Fossil Hot Spring Deposits

Tectonically and volcanically active regions and Cenozoic volcanic provinces host the majority of the world’s known epithermal gold and silver deposits and represent vast geothermal energy resources.

As sinter deposits are the surface expression of subsurface geothermal circulation and potential mineralization and hence a target in exploration for these resources, reports of fossil hot spring deposits are relatively frequent in Cenozoic (particularly Neogene) strata. Most important amongst the major Cenozoic epithermal provinces are those of the ‘Ring of Fire’ that encircles the Pacific Ocean, which are associated with extensional areas of island and continental margin arcs and back-arc basins. Further examples are associated with continental rifts and extensional continental margins and hot spot volcanism.

New Zealand


Central America

Nevada Rift, USA
Pliocene - McGinness Hills, Austin

Miocene - Hasbrouk Mountain, Tonopah

Active hot spring systems
Holocene fossil hot spring deposits
Cenozoic fossil hot spring deposits
Mesozoic fossil hot spring deposits
Palaeozoic fossil hot spring deposits

Next - Mesozoic fossil hot spring deposits