Carbonates in thin section: Molluscan bioclasts
Molluscan bioclasts are important components of tropical, and cool-temperate water limestones Bioclasts are probably the most important components of Phanerozoic […]
Interpreting ancient environments
Volcanics in outcrop: Pyroclastic density currents
This post continues the series on volcanic and volcaniclastic rocks in outcrop, with a brief introduction to pyroclastic density currents
Fluid flow: Froude and Reynolds numbers
19th century experiments that helped quantify the nature of fluid flow, surface waves, and bedforms. It all depends on inertia,
Beach microcosms as fan delta analogues
Natural analogues for full-sized fan deltas Walk any sandy beach at low water, negotiating flotsam, cusps, bedforms, and pools draining
A submarine channel complex
Here is a brief description of a submarine channel complex in the Jurassic Bowser Basin (northern British Columbia), a major
Geohistory 2: Backstripping tectonic subsidence
Teasing the tectonic subsidence from total basin subsidence Sedimentary basins are defined as regions of long-term subsidence of the crust
Geohistory 1: Accounting for basin subsidence
Decompacting a stratigraphic column to determine basin subsidence The analysis of a sedimentary basin begins at the hand-sample and outcrop
Geofluids: The permeability of faults
The changing fortunes of fault permeability and fluid flow Faults can act as conduits or barriers to fluid flow. As
Geofluids: Sedimentary basin-scale fluid flow
Fluid flow, like rocks and sediments, define sedimentary basins There is a complex interweave of fluid, sediment, and rock
Geofluids: Lithosphere-scale fluid flow
Fluid flow at lithospheric scales There’s not much that goes on in sedimentary basins that doesn’t involve fluids, particularly the