The Bouma sequence and turbidite deposits

For a while now, the most popular page on my site has been this one, a photo of a Halloween pumpkin I carved to look like the Bouma sequence.  It is the most popular because people are looking for information about the Bouma sequence, so it is time to do a real post on the …

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Climbing-ripple successions in turbidite systems: depositional environments, sedimentation rates and accumulation times

Wow, that is a title right there! The third and final paper (PDF) of my thesis is finally published - I submitted this paper in 2010, and it was published online in the fall of 2011. Now however, it is finally out in print, and it feels real now. It was my most 'academic' project, …

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New Zealand turbidite field trip – (final) Day 6: Scoured submarine lobe deposits

So, we took a day to drive across from the Taranaki basin to the East Coast basin, the forearc side of the Coromandel arc of the north island of New Zealand.  I wont try to elaborate on the Neogene tectonics of New Zealand - there have been multiple episodes of shortening, extension, strike slip, and …

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New Zealand turbidite field trip – Day 4: Mass transport deposits

Holy cow.  It just keeps getting better.  I can honestly say that my mind was blown today.  We saw some mass transport deposits (MTDs) that are truly seismic in scale!  Maybe not as big as the Storegga slide, but pretty dang big.  For a nice paper on MTDs, go here.  Since there is a student …

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New Zealand turbidite field trip – Day 2-3: Submarine lobe deposits

Wow, these rocks are fantastic! The last two days we have been looking at submarine lobes exposed along the Taranaki coast. Lobes are areas downstream of submarine channels where the gradient decreases (i.e. becomes quasi-flat) and turbidity currents deposit sand in an oblate shape emanating from the channel. For a great paper on lobes, see …

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New Zealand turbidite field trip – day 1

Today we went to a nice outcrop along the west Taranaki coast to look at Miocene turbidites.  These deep-marine sandstones were deposited in a retro-arc setting during the mid to late Miocene - more on that in another post.  The Taranaki basin is also a very productive basin in terms of hydrocarbons, with more than …

Continue reading New Zealand turbidite field trip – day 1