Saturday, June 27, 2009

GeoHonduras 09 - Paleomag

Some of my photographs of June 2009 fieldwork in Honduras. We collected over 1000 samples of Jurassic, Cretaceous and Miocene rocks to determine the rotation history of Honduras and the Chortis block. Many thanks to Douwe van Hinsbergen (Norwegian Geological Survey) and Roberto Molina-Garza (UNAM National university of Mexico).

Wednesday, June 24, 2009

Friday, June 19, 2009

GeoHonduras 09 - Jurassic

Returning to Honduras in July to focus on Jurassic Agua Fria Fm. Lens-shaped fluvial channel/fan complex (>500 m thick, ~ 10 km wide) below marine sequence is target of mapping, measured sections and facies analysis.

Wednesday, June 17, 2009

More New Exposure

The road between Valle de Angeles and San Juan de Flores is paved. A nice non-dusty sequence of Canteranas and other Mesozoic strata (See Carpenter, 1954 GSA Bull) are exposed on road above San Juan de Flores.

Tuesday, June 16, 2009

Post EarthQuake GPS

Manuel Rodriguez UNAH just finished occupying Omoa, La Ceiba and San Pedro Sula GPS sites (all North Coast).

Monday, June 15, 2009

Email update

Normal email not working. Use hondorob@gmail.com until Wednesday, June 17.

New exposures: basement, Jurassic and Cretaceous

In Tegucigalpa for a few days. The road ftom Talanga to El Porviner is paved. Very good exposures of basement between El Porviner and Marale. Hondutel Cell towers (everywhere) have put new access to many higher elevaltion places across country. Near Victoria, Yoro there appears to be thick sub Atima (Jurassic) sands and bimodal volcanic sequence. The road to San Francisco de la Paz is pave - nice exposures of K Valle de Angeles Fm fluvial sequence. Between Danli and San Julian, El Paraiso and beyond is fresh exposure of upper marine facies of J Agua Fria marine facies containing rhyolite ash sands.
-RR

Wednesday, June 10, 2009

GeoHonduras 09 Paleomag

In Honduras with Roberto Molina and Douwe van Hinsbergen drilling cores for paleomag. We´re sampling the Cretaceous in Olancho and as well as the Eocene, Jurassic and Miocene elsewhere. Should have solution to rotation issues soon. Back to the field....