Earth Sciences Commons^™

Topographic And Volcanic Asymmetry Around The Red Sea: Constraints On Rift Models, Timothy H. Dixon, Erik R. Ivins, Brenda J. Franklin

School of Geosciences Faculty and Staff Publications

The Red Sea rift is asymmetric, with the locus of uplift and Tertiary volcanism in Saudi Arabia, 200–400 km east of the present rift axis. One model for this asymmetry involves simple shear extension on an east dipping, low-angle master fault that penetrates the lithosphere. Uplift and volcanism would mark the location where the fault enters the asthenosphere. However, observed seismicity, regional heat flow, and sedimentation are not in accord with this model's predictions. An alternate model involves interaction of upwelling asthenosphere in the early rifting stage with a nearby crustal weak zone such as a suture that controls rift …

Surface Sediments And Their Relationship To Water Quality In Hillsborough Bay, A Highly Impacted Subdivision Of Tampa Bay, Florida, J.O.R. Johansson, A.P. Squires

Reports

This paper will summarize the composition of surface sediment and sediment oxygen demand rated in Hillsborough Bay. Also, a first attempt is made to relate the nutrients released from these sediments to the phytoplankton, the dominant primary producers of the bay.

I Campi Solcati Di Borgo Grotta Gigante Nel Carso Triestino, Franco Cucchi, Nadia Radovich, Ugo Sauro

International Journal of Speleology

Detailed description of the karren fields close to Borgo Grotta Gigante near Trieste, with very detailed maps, pictures and tables.

Distribution Patterns And Accumulation Rates Of Fine-Grained Sediments In Upper Tampa Bay, Florida, Gregg R. Brooks

Reports

Tampa Bay, a drowned river valley, is the largest estuary on Florida's west coast.

Surface sediments consist of a mixture of carbonate and terrigenous clastic sands and muds.

The objectives of this study are to determine accumulation rates and processes controlling the distribution patterns of fine grain sediments.

Casa Central And South America Gps Geodesy, James Kellogg, Timothy H. Dixon, R. Neilan

School of Geosciences Faculty and Staff Publications

In January 1988, scientists from over 25 organizations in 13 countries and territories cooperated in the largest Global Positioning System (GPS) campaign in the world to date (Table 1) [Neilan et al., 1988]. From January 18 to February 5, 1988, 43 GPS receivers collected about 590 station-days of data in American Samoa, Australia, Canada, Colombia, Costa Rica, Ecuador, New Zealand, Norway, Panama, Sweden, United States, West Germany, and Venezuela. The experiment was entitled CASA UNO, an acronym for Central and South America—and “uno” is Spanish for “one,” designating first-epoch measurements. The CASA UNO experiment was the first civilian …

Rakov Škocjan Karst Valley, Peter Habič, Rado Gospodarič

International Journal of Speleology

Geological, geomorphological and speleological description of the Rak Valley with several caves and natural bridges.

Škocjanske Jame Speleological Revue, Peter Habič, Martin Knez, Janja Kogovŝek, Andrej Kranjc, Andrej Mihevc, Tadej Slabe, Stanka Šebela, Nadja Zupan

International Journal of Speleology

Historical overview of the investigations and of the touristic display of the Skocjanske Jame cave with geological, geomorphological, sedimentological and speleogenetical outlines.

La Storia Della Speleologia Triestina In Relazione Al Problema Timavo, Fabio Forti

International Journal of Speleology

Historical overview of Speleological researches carried out to understand the Timavo problem near Trieste.

Lineamenti Geomorfologici Della Costa E Dei Fondali Del Golfo Di Trieste E Considerazioni Sulla Loro Evoluzione Tardo-Quaternaria, Ruggero Marocco

International Journal of Speleology

Description of geomorphology of the coasts and the seafloor of the Gulf of Trieste, with paleogeographical discussion on its Late Quaternary evolution.

Caratteristiche Mineralogiche Delle Grotte Del Carso Triestino, Graziano Cancian, Francesco Princivalle

International Journal of Speleology

Mineralogical description of terra rossa, alluvial sediments, guano deposits, oxides, carbonates and gypsum found in caves of the Trieste Karst.

Trieste Karst: Geological And Stratigraphical Notes, Franco Cucchi, Nevio Pugliese, Furio Ulcigrai

International Journal of Speleology

Detailed geological and stratigraphical description of the Karst of Trieste.

Caratteri Generali Delle Morfologie Nelle Alpi E Prealpi Giulie E Nel Carso Triestino, Franco Vaia

International Journal of Speleology

The morphology of the Julian Alps and Prealps and of the Triestian Karst are here shortly described; the structures, which defined its origin and development, are also considered. We can notice some cliffs which follow one another from the State boundary to the Adriatic sea; they are made up by lithologic successions, which repeat themselves according to the latitude. Anyway we recognize a general outcropping of rock masses which are decreasing little by little southward as regards the altitude, the age and than the erodibility. There are some differences between the western (Carnian) and the eastern (Julian) bend of the …