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The Association Upcoming Meetings:
10th
CAVEPS and Quaternary Extinction Symposium CANQUA June 5-8, 2005 2nd
International Congress
The Quaternary Times Directory of Quaternary Scientists 2005 Northeastern Friends of the Pleistocene meeting Quaternary-Related Journal Discounts Quaternary Job Opportunities Quaternary-Related Abstracts Quaternary-Related Links Society of American Archaeology Fellowship Announcement Search the AMQUA Site
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En Espanol First Circular AMQUA 98 Theme: Northern Hemisphere-Southern Hemisphere Interconnections. Rationale: A major source of uncertainty in global change research relates to the interconnections between the northern and southern hemispheres. Consequently, much current research is focused on these interconnections. The IGBP/PAGES PANASH (Paleoclimates of the Northern and Southern Hemispheres) project and, more specifically for the Western Hemisphere, the PEP I (Pole-Equator-Pole) project are directed towards these north-south interconnections. The 15th AMQUA Meeting will provide a public scientific forum for discussion of these interdisciplinary problems. Format: As usual for AMQUA meetings, the format will consist of a single session with ample opportunity for discussion and interaction. Invited speakers will address important and timely subjects related to the theme. All meeting attendees are encouraged to participate in the poster session, which will have its own time slot. Posters do not have to be related to the meeting theme. In addition, AMQUA members may submit abstracts without a poster presentation. Schedule Highlights: Friday Sept. 4 Arrival, registration, and return from pre-meeting field trips. Welcome
mixer. Estimated Registration Fees: Before June 30, 1998 $90.00 regular, $50.00 student Accommodation: Hotel Krystal Vallarta is located on one of the most beautiful coastlines of the Mexican Pacific with almost one kilometer of beach. Hotel Kristal is offering very reasonable rates of US$65.00 per night, double or single room. Weather: The climate is tropical-humid, with average temperatures of 26 oC (70 oF). September is at the end of the rainy season, so bring your umbrella and waterproof gear. Puerto Vallarta is a resort city of 250,000 on the Pacific coast of Mexico famous for beaches, shops, cobblestone streets, mariachis, and vendors. The city is located where tropical deciduous and thorn forests of the Sierra Madre Mountains meet the warm waters of the Pacific Ocean. Travel: Puerto Vallarta can be reached in a number of ways. Gustavo Diaz Ordaz International Airport is located 4 miles northeast of the city. Direct flights are available from several cities in the United States. Airlines serving the city include Aero Mexico, Alaska Airlines, America West Airlines, American Airlines, Continental Airlines, Delta Airlines, Mexicana Airlines, and Northwest Airlines. The airfare from San Francisco, San Diego, or Dallas varies between US$400550. You can also fly to Mexico City or Guadalajara and then take an internal flight to Vallarta. The costs of these flights are N$955 (US$120) from Mexico City or N$639 (US$80) from Guadalajara. If you prefer you can also drive or take a bus. There are direct services from both cities in first class busses. The costs are between N$350450 (US$4356) from Mexico City and about N$145 (US$20) from Guadalajara. If you prefer to drive, from Mexico City you will take the MEXICO 15 highway to Toluca and continue from there to Guadalajara. This journey is 547 km and will take about 6 hr. Once in Guadalajara you continue on the MEXICO 15 highway towards Tepic but about 65 km before Tepic you take the deviation to highway MEXICO 68 towards Compostela. After Compostela you pass the town of Las Varas and then the highway changes to the MEXICO 200 road that takes you for about 107 km, by the seaside, all the way to Puerto Vallarta. In total, from, Guadalajara this drive is 338 km and takes about 4 to 5 hr. Highways in Mexico are toll roads, and the tolls from Mexico City to Guadalajara are of the order of N$300 (US$40) and from Guadalajara to Compostela of N$85 (US$10.5). If you are brave enough to drive (or take a bus) all the way from the USA, you can do so via two main routes. From Mexicali you will have to take the road MEXICO 2, crossing the dessert all the way to Caborca following on highway MEXICO 2 to Santa Ana. From there you will take highway MEXICO 15 to Mazatlán, passing Hermosillo, Los Mochis, and Culiacán. From Mazatlán you follow on the MEXICO 15 road that becomes the MEXICO 15 highway again near Tepic. About 65 km after Tepic you will take the deviation to the MEXICO 68 highway to Compostela as explained above. You could also take the Tijuana route, all the way down the Baja California peninsula to la Paz on the MEXICO 1 road and from there take the ferry service to Mazatlán. For more information: Contact the local organizing committee at AMQUAMEX@servidor.unam.mx FIELDS TRIPS Ten field trips are being offered in conjunction with the 98 AMQUA Meeting. Several of these begin and/or end in Mexico City. Several airlines will allow alternate arrival or departure from either Mexico City or Puerto Vallarta. The Second Circular will contain more information. Depending on demand, some of these field trips may be offered both before and after the meetings. The Second Circular will contain the final schedule. 1) Paleontological and Archaeological highlights of the Mixteca Poblana and other sites in Central Mexico. A unique area which encompasses a variety of fossils of different environments and ages from the Mesozoic to the Quaternary, as well as numerous small sites that were inhabited by different ethnic groups such as Popolocas Nahuatls and Mixtecos during several archeological periods. The trip will include stops at the well known fossil localities of Tlayua "the Mexican Solhofen" and the Pleistocene vertebrate footprint outcrop known as Pie de Vaca. A Popoloca fortress (of Classic and Post-Classic age) and other sites where evidence of ancient humans has been recorded (paintings, ceramics, pyramids, among others) will also be visited in The Mixteca Poblana area. Before arrival to Mexico City, we will stop at the remarkable frescos of Cacaxtla (the height of the Olmeca - Chicalanca culture) in the State of Tlaxcala. Organizers / leaders: Marisol Montellano and Luis Espinosa, Institute of
Geology, UNAM. We will visit Los Azufres caldera complex, maars, cinder cones, shield volcanoes, and several of the major lacustrine basins of northern Michoacan, central Mexico. Los Azufres caldera complex is one of the largest resurgent calderas in the central portion of the Trans-Mexican volcanic belt and hosts one of the geothermal fields that is being used for electric power generation in Mexico. During the second day we will visit the Cuitzeo basin, which is an elongated volcano-tectonic depression. We will be able to examine some of the details of the structural geology, volcanic stratigraphy, and lacustrine sedimentary record. There are numerous cinder cones and small shield volcanoes in this region, which is part of the monogenetic volcanic field of Michoacan-Guanajuato. We will stop at the volcanic field of Valle de Santiago, which is characterized by a belt of maars, cinder cones, and shield volcanoes. We will also visit: Rincon de Parangueo, Cintura, and Yuriria maars (contain crater lakes), and the Alvarez maar (dry). Organizers / leaders: Victor Hugo Garduño and Isabel Israde, Universidad de
Michoacan and 3)Michoacan Lake District II: Lakes Cuitzeo, Patzcuaro, and Zirahuen and Paricutin volcano. Morelia City includes some of the best examples of colonial architecture, which are well worth visiting. The University is one of the oldest education centers in Latin America with historical roots that date from 1540. During the stay the group will visit Lake Cuitzeo which represents the second largest natural water body in the country. The lake is shallow and it is characterized as an hypereutrophic system; its monastery dating from the 17th century is located on its shore and is an interesting site to visit. Lake Patzcuaro is one of several lacustrine basins in central Mexico. This lake is being studied by several groups interested in its paleoclimatic and paleolimnological record. The archaeological site of Tzitzuntzan, on the shores of this lake, is one of several sites of the Purhepecha (Tarascan) culture that formed a large and powerful empire before the arrival of the Spanish conquerors in the 16th century. The first night will be spent in the city of Uruapan. The following day we will visit the Paricutin volcano. Paricutin was born in 1943 on a corn field plain and was active for 9 years. It is one of the few new volcanoes extensively studied from its birth. The visit includes a walk to the crater cone, the lava flows, and to the remains of the town church. Organizers / leaders: Arturo Chacón, University San Nicolas de Hidalgo,
Michoacan. 4) NEVADO DE TOLUCA: Upper Lerma River Basin, Teotenango, and Nevado de Toluca Stratovolcano. This field trip will focus on the extensive lacustrine basin of the Upper Lerma
River and on the cinder cone volcanism and the Nevado de Toluca stratovolcano. The Lerma
River is the largest river in central-western Mexico, draining the volcanic province from
the area of Toluca to the Chapala Lake. The basin contains a rich paleoenvironmental
record of past climatic, volcanic, and tectonic changes during Plio-Quaternary times. The
crater of the Nevado de Toluca has two small lakes which are possible to reach by car. The
volcanic geomorphology of the Nevado de Toluca and the Chichinautzin cinder cone field
which are typical of the volcanic landscape of central Mexico. The field trip also
includes a brief visit to the archaeological site of Tenango (a prehispanic ceremonial
site built in a large thick lava flow). Organizers / leaders: José Luis Macías, Institute of Geophysics and 5) Late Cenozoic Mammal Fauna in Central Mexico: Tula, San Miguel de Allende, Zoacalco, and Tecolotlan. The trip will focus on two superimposed faunistic sequences from two important basins in central Mexico, the mammal fauna from the late Tertiary (Miocene), and the fauna from the early Pleistocene. Departing from Mexico city we will visit several locations, now under current investigation, where these sequences are exposed: Tula, San Miguel de Allende, Zoacalco, and Tecotlán. The field trip will focus on the biogeographical distribution of the mammal fauna of these periods in North America. Organizer / leader: Oscar Carranza, Institute of Geology, UNAM 6) Archaeology, Lakes, and Volcanoes: The basin of Mexico: Chalco, Xochimilco, Popocatepetl, Xico, Cuicuilco, and Teotihuacan. The field trip will focus on the lacustrine basins, volcanoes, and archaeological sites in the basin of Mexico. During the first day we will visit the remnants of the lakes of Chalco and Xochimilco in the southern sector of the basin, which were part of the extensive lake system that developed during the Quaternary. We will then visit the Xico volcano located in the middle of Chalco lake. We will then go to the archaeological site of Cuicuilco, which includes the earliest pyramids in the area that were covered by lava flows of the Xitle volcano. During the second day will visit Popocatepetl volcano. Access to Popocatepetl may be restricted because of its current episode of eruptive activity (started in December 1994) which has included the emplacement of a lava dome and explosive ash eruptions. The third day will include the archaeological site of Teotihuacan in the northern sector of the basin, and we will tour in the surrounding lacustrine plains. In Teotihuacan we will visit the ceremonial city and some of the areas under current excavation but will focus on the volcanic terrain and units over which the pyramids and other constructions were built. We will also visit some of the ancient quarries, tunnels, and remnants of cinder cones. Organizers / leaders: Linda Manzanilla, Luis Barba, Institute of Anthropology
and 7) Tropical Rain Forest: Changes in vegetation from central highlands to the tropical lowlands. The main purpose of this field trip is to become familiar with the tropical rain
forest in Mexico. Departing from Mexico City, we will see a vegetation gradient from: the
pine-oak forest in the highlands of the Sierra Nevada, the semiarid vegetation in the dry
slopes of Perote, the mangrove communities in the Veracruz lowlands, and ending at the
biological station in the tropical rain forest at Los Tuxtlas. In Los Tuxtlas it will be
possible to observe several series and successional stages leading to the undisturbed rain
forest. We will visit the facilities of the station and be made aware of the present
research projects. During the trip emphasis will be given to the high diversity of the
Mexican flora. 8) Quaternary magmatic and Phreatomagmatic activity in minor and major volcanic centers in the eastern Trans-Mexican Volcanic Belt (TMVB), Past and present economic importance of volcanic products. During the first two days we will visit some of the tuff-rings and tuff-cones produced by the Quaternary phreatomagmatic activity within the Serdán-Oriental lacustrine basin, as well as the Quetzalapa pumice produced by a Plinian eruption which lead to one of the world´s thickest pumice fall deposits. The third day we will see the Rhylitic Cerro Pinto dome, its products and principal industrial uses, after which we will go to the pre-hispanic past, visiting the city of Cantona, which lies on a lava flow emitted during the last period of the large Los Humeros Caldera. The fourth day will be spent visiting the geothermal wells producing electricity at Los Humeros. Organizer / leader: Sergio Rodriguez, Institute of Geology, UNAM. 9) Remnants of past lacustrine events in Central Tlaxcala. This is a one day trip, and we will visit the remnants of lacustrine sediments originated in the Tertiary and Quaternary. Tlaxcala lacustrine sediments are mainly nontronites originated by volcanic glasses weathered in a lacustrine environment. Tlaxcala paleolake is a diatomite bed originated in a freshwater system. Within these deposits it is possible to observe the effect of perturbations such as volcanic eruptions in the lacustrine system. Organizers / leaders: Roberto Rico and Gloria Vilaclara, ENEP-Iztacala y Gustavo
Martinez Mekler, Instituto de Física, UNAM. 10) The Chihuahua desert This field trip will focus on the geomorphology of semiarid and arid environments, on altitudinal variations on the vegetation and, especially, on the lacustrine sequence of Laguan Babicora. Babicora is a paleolake located in a graben in which lacustrine, alluvial, and aeolian deposits from the Quaternary can be observed. A visit to the "Las Cuarenta Casas" archaeological site, related to the Paquime Desert Culture, will also be made. Organizers / leaders: Alfonso Valiente, Institute of Ecology and Please Print this form and mail it to the above address, this form will be imporved in the future after I return. --RDN Request to Receive the Second Circular AMQUA 98 Dra. Socorro Lozano García Instituto de Geología Universidad Nacional Autonoma de Mexico Ciudad Universitaria Apartado Postal 70-296 04510, Mexico D.F. MEXICO Fax: +52 5 550 6644 Mail or Fax to the address above Name Email Mark any field trips you will probably attend. If you can, rank these requests. The field trips offered on the Second Circular depends on the responses from this First Circular. A 50% prepayment for field trips will be required in advance. More information will appear in the Second Circular. 1) 6) Will you be submitting a poster?__________ An abstract? __________ |