Presentations

Jadeitites in the Caribbean Context

A talk presented at the VII Congreso Cubano de geología: Workshop IGCP-546 which presented an interpretation of jadeitites as a record of tectonic process, subduction zone fluids and their role in understanding Pre-Columbian cultural connections

There are 50 images in this gallery

Last updated: Tue, 02/23/2010 - 10:17

Under the title "Where to look for jade sources," a map of the Caribbean Sea, ringed by the Gulf of Mexico, Atlantic Ocean, southeastern US, and the coasts of Central and South America.
A graph titled "Pyroxene Compositional Trends: Carrizal Grande, South of MF."
A field of dark gray mottled color with lighter gray areas and veining of darker gray.
A field of mottled light gray, dark gray, and white areas.
A slide titled "Carrizal Grande Jadeitites" showing jadeitite and eclogite blocks in Quebrada Seca, San Jose with a person on a rope in a narrow chasm
A graph titled "Pyroxene Compositional Trends: La Ceiba, South of MF."
A graph titled "Pyroxene Compositional Trends: La Ensenada, South of MF."
A split slide titled "Southern Jadeitites" with bullet points of text and a graph.
A graph titled "Trace Elements and Fluid Fertilization."
A graph concerning fluids and the formation of jadeitites from Guatemala, the Urals, Kazakhstan, Myanmar, and Japan.
A slide with text concerning the formation of eclogite, with a map.
A slide titled "Sourcing jade from the Caribbean" with a map of the Caribbean Sea, its islands, and the coasts of Central and South America.
Nine rock specimens, "Saladoid period circa 250 to 500 CE" and four carved flat figurines with scorpion tails and humanoid heads, "Huccoid Scorpion Men
A field of gray color mottled with areas of darker gray and white specks.
A split slide with magnifications of four rock specimens of gray color mottled with white and darker gray content.
A split slide with magnifications of four rock specimens of gray color mottled with white and darker gray content.
A slide titled "Mineralogy" with text concerning the mineral assemblage of jadeitites from Antigua, and from Guatemala south of the Motagua fault zone.
A slide titled "More eastern Caribbean jades" with four photos of small rock specimens, two from Puerto Rico and two from Saint Croix, U.S. Virgin Islands.
A slide titled "Object ID by Micro-X-ray diffraction" with a graph.
A map including Central America, Caribbean Sea, Cuba, Caribbean Islands, tip of Florida, and parts of the Gulf of Mexico, North Atlantic Ocean, and northern coast of South America.
A map including Central America, the Caribbean Sea and islands, Cuba, the tip of Florida, and parts of the Gulf of Mexico, the North Atlantic Ocean, and the northern coast of South America.
A split slide titled "Jaderos in Guatemala – 2006" with photos of three people outdoors and of five people in front of a massive ornately carved stela, all posing for the camera.
A slide titled "Northern Jadeitites" with bar charts showing average fluid properties of Panaluya, El Cipres, Rio la Palmilla, and Pachalum.
A slide titled "Southern Jadeitites" with bar charts showing average fluid properties of La Ceiba, La Ensenada, and San Jose.
A slide titled "Fluid Sources" with two graphs, one for northern jadeities, and one for southern jadeitites.
A field of gray color mottled with areas of darker gray and white specks.
A slide titled "Jadeitites and their implications" with bullet points about features of jadeitite rock.
A map of the world excluding Antarctica, showing the locations with jadeitite and blueschist.
A slide titled "What are our goals?" with bullet points concerning questions related to jadeitite.
A slide titled "West Caribbean HP-LT Rock Distribution" with a map of parts of the Gulf of Mexico and the Caribbean Sea, and adjacent land.
A slide titled "Serpentinite Melange and Ophiolites along Guatemala Suture Zone" with a map of geologic features.
A slide titled "High-P/Low-T along Motagua Fault of Guatemala Suture Zone" with a map of geologic features.
A slide titled "North of MF" with two photos of rock formations and two photos of rock specimens.
A slide titled "Jadeite occurrence North side, Motogua Fault, Guatamala" with a map of jadeite blocks
An image of a field of gray color mottled with areas of darker gray and white specks. Arrows denote A-b, Parag, O-m-p-h, J-d, and A-n-l
An image of a field of gray color mottled with areas of darker gray and white specks. Arrows denote A-b, Parag, O-m-p-h, J-d, and A-n-l
A slide titled "200 Kilometers of Jadeitite" with a map showing the Chortis Block and areas with jadeitite, amphibolite, eclogite, and blueschist
A graph titled "Pyroxene Compositional Trends: Central, North of MF.
A field of gray color mottled with areas of darker gray and white, and a small superimposed photo of three gray rock specimens.
A graph titled "Pyroxene in Mauve Jadeitite MVE07B-19-1: Near Saltan—North."
A graph titled "Pyroxene Compositional Trends: Central, North of MF.
A graph titled "Pyroxene Compositional Trends: East, North of MF.
A graph titled "Jadeitite MVR07-23C."
A split slide titled "Northern" Jadeitites with bullet points of text next to a graph.
A slide titled "New" Jadeitite occurrences South side, Motagua Fault, Guatemala, 2001" with photos of gray boulders and a specimen of blue jadeitite.
A split slide defining "Lawsonite Eclogites from South of the MFZ" with text next to a graph, and a close-up of a specimen with a mottled gray surface
A slide titled "Jadeitites from South of the Motagua Fault" with text and two photos of specimens with blue-green crystals, one with white veining.
A presentation slide titled "Jadeitites in the Caribbean Context: Recorders of Tectonic Process, Subduction Zone Fluids and Pre-Colombia Cultural Connections." It lists Museum scholar George Harlow and experts from four other U.S. institutions.
A slide acknowledging collaborators Tatsuki Tsujimori, Sidney Hemming, Charlie Mandeville, George Rossman, Birgid Plesson, Uwe Martens, Mauricio Chiquin, Russell Seitz, students Nancy Price and Eric Sahm, intern Scott Strenger, and Jamie Newman.
Two side-by-side images of intricate carvings, one of light-brown color nephrite, the other of bright green jadeite.

P-T Estimates for Eclogite / Garnet Amphibolite from Guatemala

A talk presented at the 2008 Annual Geological Society of American meeting in Houston, TX in the session honoring the Roebling Medal Recipient Bernard Evans.

There are 36 images in this gallery

Last updated: Tue, 02/16/2010 - 10:21

A split slide titled "Northern Eclogite" with bullet points of text and a graph.
A slide titled "Plate-tectonic interpretation of paired collisional belts" with three maps, each showing the Chortis Block in brown.
A map of the Central America border area of Guatemala, El Salvador, and Honduras noting Manzanal, La Ensenada, La Ceiba, and Carrizal Grande.
A slide titled "Geologic Map of the Ventana Verde Project: Ventana Mining Company, Guatemala Jade Project" showing the locations of various minerals and geologic features.
A slide titled "Guatemalan Grt-Cpx Rocks" with a graph.
A split slide titled "Jaderos in Guatemala—2006" with photos of three people outdoors and of five people in front of a massive ornately carved stela.
A slide titled "Many thanks to" with text listing supportive individuals and institutions.
A slide with text about rock origins and metamorphism, and a map showing the locations of faults and deposits of jadeitite, amphibolite, and eclogite.
A split slide with two maps including the locations of jadeitite, serpentinite, and white mica samples.
A slide titled "Tectonic Conundrum" with two maps.
A slide titled "Summary: Metabasites differ in PT conditions vary across Motagua Fault."
A split slide with two graphs.
A slide titled "Lawsonite Eclogite" with two images of mottled colors.
"Lws-Eclogite Occurrences, South Side, Motagua Fault, Guatemala" four photos show hills; geological hammer; person working in the field; a specimen.
A split slide titled "Northern Grt amphibolite" with bullet points of text and a graph opposite.
A slide titled "T Estimates to Date" with lines of data.
A slide titled "Amphibole in MVE06-11-1 Grt-Amphibolite (Alt. Eclogite), Estancia de La Virgen (northern)" with a graph.
A slide titled "Omphacite in Grt Amphibolite MVE06-11-1" with a graph.
A slide titled "MVE06-5-3 Garnet Traverse" with a graph.
A slide titled "Garnet Amphibolite" with a specimen showing an area of mottled gray color with pink specks and some thin white veining.
A slide titled "Amphibole in MVE06-5-3 Eclogite, Rio Belejeya (northern)" with a graph
A slide titled "Omphacite in Eclogite A MVE06-5-3: Rio Belejeya—North" with a graph
A slide titled "MVE06-5-3 Garnet Traverse" with a graph showing cations per formula unit and distance in microns.
A slide titled "Eclogite" with a specimen magnified to show a large white area specked with black and gray against a larger mottled dark gray area.
A slide titled "Eclogite, Rio Belejeya, to west" with a specimen magnified to show deposits of black and white minerals in a field of gray and pink.
A slide titled "North of MF" with photos of a person working amid large boulders, a person with large boulder, and three gray specimens.
A slide titled "High-P/Low-T along Motagua Fault of Guatemala Suture Zone" with a map.
A visual presentation slide titled "P-T Estimates for Eclogite / Garnet Amphibolite from Serpentinite Melanges along the Motagua Fault Zone, Guatemala."
A visual presentation slide titled "Caribbean Northern Plate Boundary" with a map including areas of Mexico, the Gulf of Mexico, Central America, Cuba, and the Caribbean Sea.
A slide titled "Serpentinite Melange and Ophiolites along Guatemala Suture Zone" with a map of geologic features.

Serpentinite Melanges of Guatemala: An Assessment

Progress report on analysis of serpentinites constituting the paired melanges adjacent to the Motagua fault, Guatemala: Presented at Annual Meeting of the Geological Society of America, Denver, Colorado, 2010.

There are 8 images in this gallery

Last updated: Sat, 03/26/2011 - 11:26

A slide titled "Serpentinites of the Motagua Fault Zone Melanges, Guatemala: An Assessment" with a photo of a rock excavation site.
West Caribbean Serpentinite Distribution slide showing areas in Mexico, Guatemala, Honduras, El Salvador, Nicaragua, Cuba, and Jamaica.
A slide titled "Geologic Context of Serpentinite Melanges" with three lines of text and a map.
A slide titled "Central Motagua Valley, Guatemala" showing various faults and areas with jadeitite, amphibolite, eclogite, and blueschist.
A slide titled "Geologic Map of Central Motagua Valley, Guatemala" with a multicolored map.
A slide titled "Mineralogy of the Serpentinites" with a bar chart.
A slide of serpentinite magnified to show mottled coloration of dark and light greens, and specks of red.
A magnified image of rock crystals of blue, green, pink, and gray colors.
A magnified image of rock crystals of blue, green, and brown colors.
A bar graph titled "Mineralogy of the Serpentinites.
A bar graph titled "Mineralogy of the Serpentinites."
A slide titled "Residual Peridotites" with bullet points of text.
A graph titled "Pyroxene in Southern Peridotites."
A graph titled "Guatemala Melange Serpentinites (whole rock)."
A graph titled "Guatemala Melange Serpentinites and Peridotites."
A slide titled "Chromite in Serpentinite" with two graphs.
A graph titled "Chromite in Serpentinite."
A graph titled "Chromite in Serpentinite."
A graph titled "Chromite in Serpentinite."
A slide titled "Conclusions" with bullet points of text.
A slide titled "Many thanks to" with text, and the logos of the American Museum of Natural History and three other science institutions.
Five people standing outdoors at the Archaeological Park and Ruins of Quirigua in Guatemala, in front of a massive ornately carved stela.