From Ranching to Fishing – The Cultural Landscape of the Northern Pacific Coast of Baja California, Mexico

2016 ◽  
Vol 59 ◽  
Author(s):  
Antoinette WinklerPrins ◽  
Pablo Alvarez ◽  
Gerardo Bocco ◽  
Ileana Espejel
Keyword(s):  
Cultural Landscape ◽  
Baja California ◽  
Pacific Coast ◽  
Northern Pacific

scholarly journals Distribution and nutrient limitation of surfgrass, Phyllospadix scouleri and Phyllospadix torreyi, along the Pacific coast of Baja California (México)

2002 ◽  
Vol 74 (2) ◽  
pp. 121-131 ◽  
Author(s):  
P. Ramı́rez-Garcı́a ◽  
J. Terrados ◽  
F. Ramos ◽  
A. Lot ◽  
D. Ocaña ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Baja California ◽  
Pacific Coast ◽  
The Pacific

scholarly journals MIS 5e sea-level history along the Pacific Coast of North America

2021 ◽  
Author(s):  
Daniel R. Muhs
Keyword(s):  
North America ◽  
Sea Level ◽  
Baja California ◽  
Pacific Coast ◽  
Level Indicator ◽  
Sequence Of Events ◽  
Marine Terraces ◽  
The Pacific ◽  
Mis 5E ◽  
Good Agreement

Abstract. The primary last interglacial, marine isotope substage (MIS) 5e records on the Pacific Coast of North America, from Washington (USA) to Baja California Sur (Mexico), are found in the deposits of erosional marine terraces. Warmer coasts along the southern Golfo de California host both erosional marine terraces and constructional coral reef terraces. Because the northern part of the region is tectonically active, MIS 5e terrace elevations vary considerably, from a few meters above sea level to as much as 70 m above sea level. The primary paleo-sea level indicator is the shoreline angle, the junction of the wave-cut platform with the former sea cliff, which forms very close to mean sea level. Most areas on the Pacific Coast of North America have experienced uplift since MIS 5e time, but the rate of uplift varies substantially as a function of tectonic setting. Chronology in most places is based on uranium-series ages of the solitary coral Balanophyllia elegans (erosional terraces) or the colonial corals Porites and Pocillopora (constructional reefs). In areas lacking corals, correlation to MIS 5e can sometimes be accomplished using amino acid ratios of fossil mollusks, compared to similar ratios in mollusks that also host dated corals. U-series analyses of corals that have experienced largely closed-system histories range from ~124 to ~118 ka, in good agreement with ages from MIS 5e reef terraces elsewhere in the world. There is no geomorphic, stratigraphic, or geochronology evidence for more than one high-sea stand during MIS 5e on the Pacific Coast of North America. However, in areas of low uplift rate, the outer parts of MIS 5e terraces apparently were re-occupied by the high-sea stand at ~100 ka (MIS 5c), evident from mixes of coral ages and mixes of molluscan faunas with differing thermal aspects. This sequence of events took place because glacial isostatic adjustment processes acting on North America resulted in regional high-sea stands at ~100 ka and ~80 ka that were higher than is the case in far-field regions, distant from large continental ice sheets. During MIS 5e time, sea surface temperatures (SST) off the Pacific Coast of North America were higher than is the case at present, evident from extralimital southern species of mollusks found in dated deposits. Apparently no wholesale shifts in faunal provinces took place, but in MIS 5e time, some species of bivalves and gastropods lived hundreds of kilometers north of their present northern limits, in good agreement with SST estimates derived from foraminiferal records and alkenone-based reconstructions in deep-sea cores. Because many areas of the Pacific Coast of North America have been active tectonically for much or all of the Quaternary, many earlier interglacial periods are recorded as uplifted, higher elevation terraces. In addition, from southern Oregon to northern Baja California, there are U-series-dated corals from marine terraces that formed ~80 ka, during MIS 5a. In contrast to MIS 5e, these terrace deposits host molluscan faunas that contain extralimital northern species, indicating cooler SST at the end of MIS 5. Here I present a standardized database of MIS 5e sea-level indicators along the Pacific Coast of North America and the corresponding dated samples. The database is available in Muhs (2021)  [https://doi.org/10.5281/zenodo.5557355].

scholarly journals Mysidopsis gemina n. sp. (Crustacea: Mysida: Mysidae) from the northern Pacific coast of Costa Rica

Nauplius ◽  
2019 ◽  
Vol 27 ◽  
Author(s):  
W. Wayne Price ◽  
Richard W. Heard ◽  
Rita Vargas
Keyword(s):  
Costa Rica ◽  
Pacific Coast ◽  
Northern Pacific

A geochemical and 3D-geometry geophysical survey to assess artificial groundwater recharge potential in the Pacific coast of Baja California, Mexico

2013 ◽  
Vol 71 (8) ◽  
pp. 3477-3490 ◽  
Author(s):  
L. W. Daesslé ◽  
M. A. Pérez-Flores ◽  
J. Serrano-Ortiz ◽  
L. Mendoza-Espinosa ◽  
E. Manjarrez-Masuda ◽  
...  
Keyword(s):  
Groundwater Recharge ◽  
Baja California ◽  
Pacific Coast ◽  
Geophysical Survey ◽  
Artificial Groundwater Recharge ◽  
Recharge Potential ◽  
The Pacific ◽  
3D Geometry

The Early Postclassic Aztatlán Colonization of the Pacific Coast of Jalisco

2020 ◽  
pp. 131-156
Author(s):  
Joseph B. Mountjoy ◽  
Fabio Germán Cupul-Magaña ◽  
Rafael García de Quevedo-Machain ◽  
Martha Lorenza López Mestas Camberos
Keyword(s):  
Pacific Coast ◽  
Archaeological Site ◽  
Postclassic Period ◽  
Subsistence Strategies ◽  
Specialized Production ◽  
The Pacific ◽  
West Mexico ◽  
Early Postclassic ◽  
Northern Pacific

The focus of this chapter is a recently discovered archaeological site, Arroyo Piedras Azules, located on the northern Pacific coast of Jalisco, Mexico. Excavated materials provide considerable information about the colonization of this area by Aztatlán groups in the Early Postclassic period, as well as the nature of the expansion of the Aztatlán phenomenon in West Mexico. Based on the data thus far obtained from the site, the authors offer five significant conclusions regarding the development and the spread of the Aztatlán archaeological culture in West Mexico, concerning the timing of development, subsistence strategies of Pacific coastal groups, the nature of Aztatlán expansion, specialized production, and links between the Arroyo Piedras Azules site to the Mixteca-Puebla area.

A new genus of cassiduloid echinoid from the lower Eocene of the Pacific coast of western North America and a new report of Cassidulus ellipticus Kew, 1920, from the lower Eocene of Baja California Sur, Mexico

1995 ◽  
Vol 69 (3) ◽  
pp. 509-515 ◽  
Author(s):  
Richard L. Squires ◽  
Robert A. Demetrion
Keyword(s):  
North America ◽  
New Genus ◽  
Baja California ◽  
Pacific Coast ◽  
Middle Part ◽  
Baja California Sur ◽  
Western North America ◽  
Lower Eocene ◽  
Shallow Marine ◽  
The Pacific

The cassiduloid echinoid Calilampas californiensis n. gen. and sp. is described from middle lower Eocene (“Capay Stage”) shallow-marine sandstones in both the middle part of the Bateque Formation, Baja California Sur, Mexico, and the lower part of the Llajas Formation, southern California. The new genus is tentatively placed in family Pliolampadidae. The cassiduloid Cassidulus ellipticus Kew, 1920, previously known only from the “Capay Stage” in California, is also present in “Capay Stage” shallow-marine sandstones of the Bateque Formation.

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