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Mayan period

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Journal Article
Journal: Palynology
Published: 02 October 2019
Palynology (2019) 43 (4): 551-573.
... in the Mayan art, depicting giant trees and beautiful flowers which they held sacred. The thick conical thorns in clusters on cylindrical ceramic burial urns or incense holders made by the southern lowland Maya of the Classical Period represents the trunk of C. pentandra . As of today, these trees are often...
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Journal Article
Published: 01 August 2010
Vadose Zone Journal (2010) 9 (3): 653-661.
...Héctor Estrada-Medina; Wes Tuttle; Robert C. Graham; Michael F. Allen; Juan José Jiménez-Osornio Abstract Northern Yucatán is a dry tropical area where limestone karst terrain supports a subdeciduous forest that is critical for sustaining the local economy of Mayan people. The 5- to 10-m-deep...
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Series: GCSSEPM
Published: 01 December 2016
DOI: 10.5724/gcs.15.35.0038
EISBN: 978-1-944966-10-2
... continental crust, associated flooding, and rapid depositional infill concurrent with the earliest detachment of the Mayan (Yucatan) crustal block from North America. The Yucatan block, although showing an affinity with South American (Amazonian) terranes ( Martens, 2009 ), was left attached to the North...
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Journal Article
Published: 01 January 2003
European Journal of Mineralogy (2003) 15 (1): 21-33.
..., while samples from different locations do not. This may be used to characterize the provenance of ancient specimens, with the goal of determining whether Maya Blue was invented and produced in one place only or if the production technology was widespread in all the Mayan region. * Corresponding...
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Journal Article
Published: 01 December 2013
European Journal of Mineralogy (2013) 25 (5): 895-905.
... of the ceramic matrix of Cuanalan pottery in the 1700–400 cm −1 were indicative of non-calcareous ceramic materials, showing strong SiO vibration of meta-clay. The RMP studies of the Mayan ceramics from Guatemala have shown their different mineralogy and chemistry. Due to the presence of calcite (characteristic...
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Journal Article
Journal: Geology
Published: 01 October 2007
Geology (2007) 35 (10): 915-918.
... was affected by ancient Maya land use from before ca. 1000 B.C. to A.D. 900. This period of human impact coincided with deposition in the lake of a detrital unit (Maya Clay) as much as 7 m thick that contrasts sharply with the relatively organic-rich gyttja deposited both before and after Maya occupation...
FIGURES
Journal Article
Journal: Geology
Published: 01 June 2010
Geology (2010) 38 (6): 523-526.
... stratigraphically, and required between 120 and 280 yr. We conclude that the tropical forest ecosystem in the watershed of Lake Petén Itzá had been reestablished by the early Postclassic Period (A.D. 1000–1200). * E-mail: andreas.mueller@erdw.ethz.ch . 21 10 2009 4 1 2010 11 1 2010...
FIGURES
Journal Article
Journal: Geology
Published: 01 February 2017
Geology (2017) 45 (2): 175-178.
...Kees Nooren; Wim Z. Hoek; Hans van der Plicht; Michael Sigl; Manfred J. van Bergen; Didier Galop; Nuria Torrescano-Valle; Gerald Islebe; Annika Huizinga; Tim Winkels; Hans Middelkoop Abstract A remarkably long period of Northern Hemispheric cooling in the 6 th century CE, which disrupted human...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2017
DOI: 10.1144/SP442.9
EISBN: 9781786202925
... of the Panamanian isthmus. We divide the narrative history of vertebrate palaeontology in Central America into three periods: earliest discoveries (1858–1936); a developing record (1937–80); and a vertebrate palaeontological renaissance (1980–present). An analytical history, applying the ‘model’ proposed by Basalla...
Journal Article
Journal: PALAIOS
Published: 01 October 2009
PALAIOS (2009) 24 (10): 650-656.
...-Amaranthaceae and then Myrica , most likely wax myrtle ( M. cerifera ). These changes bracket a period centered at ca. 3500 calibrated years before present, where there is a peak in the δ 18 O of mangrove leaf fragments. This timing corresponds with other paleoenvironmental records of climate drying in Central...
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Journal Article
Published: 01 November 2000
Journal of Paleontology (2000) 74 (6): 1000-1019.
..., Paradoxides ). In Early Amganian time there was a period when the paradoxidids were less abundant and less frequent in trilobite assemblages than Oryctocephalidae ( Oryctocara, Oryctocephalops, Oryctocephalites, Cheiruroides ) which thus characterized a short-lived Orycrtocephalid Biofacies. In Late Amganian...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2404(10)
... development associated with interglacial highstands are the norm. These are separated by phases of vadose conditions during the intervening glacial periods, with corresponding collapse, speleothem deposition, and in some cases, development of vadose canyons. Because of the slow rate of subsidence...
Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.267.01.02
EISBN: 9781862395152
... delivery to the basin from surrounding watersheds and reflects changes in rainfall. Such data have been crucial in determining the probable role of regional drought in the collapse of Mayan civilisation (adapted from Haug et al. 2003 , Figs 2 & 3). Early measurements on sediments were per...
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Series: Geological Society, London, Special Publications
Published: 01 January 2014
DOI: 10.1144/SP395.1
EISBN: 9781862396715
..., it can be said that rocks of the Quaternary System were deposited during a time interval called the Quaternary Period. In conventional stratigraphic practice, it is generally accepted that chronstratigraphical and geochronological boundaries should, as far as possible, be defined in continuous...
Journal Article
Journal: Elements
Published: 01 February 2016
Elements (2016) 12 (1): 13-18.
... hybrid material, where indigo molecules adsorb on the surface, and perhaps enter the channels, of one of the polymorphs of the clay mineral palygorskite ( Chiari et al. 2008 ; Sánchez del Rio et al. 2008 ). This brilliant blue pigment was prepared by ancient Mayans with a specific recipe that involved...
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Journal Article
Published: 01 June 2003
Clays and Clay Minerals (2003) 51 (3): 318-326.
... of Mayan wall paintings at Chichen Itza in the Yucatan. In referring to this pigment, Gettens and Stout (1946) first employed the term "Mayan Blue" which was subsequently renamed "Maya Blue". Mayans, who inhabited Mesoamerica during the late Classical period, are reported to have started using Maya Blue...
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Journal Article
Journal: Geology
Published: 01 September 2000
Geology (2000) 28 (9): 843-846.
... population. For example, the Mayan city of Copán in western Honduras was constructed over a period of ∼400 yr by a population thought to have been ∼20 000 individuals. The mass of material moved to build this city is ∼5.3 million tons ( Stuart, 1997 ). Thus, its construction required the movement of 665 kg...
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Series: Geological Society, London, Special Publications
Published: 01 January 2014
DOI: 10.1144/SP395.9
EISBN: 9781862396715
... produced by mining activities to ancient cities and highways to human modified soils and even to lead pollution, are best characterized in terms of time by the civilization that produced them (e.g. Neolithic, Babylonian, Etruscan, Roman, Mayan, Industrial Revolution in Europe, gold mining in Carlin Trend...
Journal Article
Journal: Geology
Published: 01 September 2004
Geology (2004) 32 (9): 745-748.
... of the Iroquoian zone ( Fig. 2 ). The first period of large-scale Iroquoian village occupation at Crawford Lake is identified from numerous pollen of Zea (maize), Poaceae (grasses), and Portulaca (purslane), spores of Ustilago (corn smut, a fungal disease of corn), and pollen and seeds of Helianthus...
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Journal Article
Journal: Geology
Published: 01 November 2015
Geology (2015) 43 (11): 1011-1014.
... it possible to directly study and sample rocks as well as observe and interpret structural geometries, which may be similar to those at depth in present-day passive margins. In the mid-Norwegian margin, continental breakup marks the culmination of an ∼350 m.y. period of predominantly extensional...
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