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	<title>environmental stressors in history &#8211; Science</title>
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	<title>environmental stressors in history &#8211; Science</title>
	<link>https://scienmag.com</link>
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		<title>Scientists Discover 5,500-Year-Old Ceremonial Site in Jordan</title>
		<link>https://scienmag.com/scientists-discover-5500-year-old-ceremonial-site-in-jordan/</link>
		
		<dc:creator><![CDATA[Courtney Benton]]></dc:creator>
		<pubDate>Fri, 17 Oct 2025 14:20:59 +0000</pubDate>
				<category><![CDATA[Archaeology]]></category>
		<category><![CDATA[ancient Jordan archaeological discoveries]]></category>
		<category><![CDATA[archaeological excavations in Jordan]]></category>
		<category><![CDATA[Chalcolithic to Bronze Age transitions]]></category>
		<category><![CDATA[climate impact on early societies]]></category>
		<category><![CDATA[communal spaces in ancient settlements]]></category>
		<category><![CDATA[cultural identities of early civilizations]]></category>
		<category><![CDATA[Early Bronze Age societal changes]]></category>
		<category><![CDATA[environmental stressors in history]]></category>
		<category><![CDATA[Murayghat ceremonial site significance]]></category>
		<category><![CDATA[resilience in ancient civilizations]]></category>
		<category><![CDATA[ritual practices of ancient cultures]]></category>
		<category><![CDATA[social reorganization in archaeology]]></category>
		<guid isPermaLink="false">https://scienmag.com/scientists-discover-5500-year-old-ceremonial-site-in-jordan/</guid>

					<description><![CDATA[Ancient societies often faced profound challenges that tested their resilience, social frameworks, and cultural identities. One captivating inquiry in archaeology concerns how early civilizations responded to crises, particularly those involving the collapse of established social orders. Recent archaeological excavations led by the University of Copenhagen at the Early Bronze Age site of Murayghat in Jordan, [&#8230;]]]></description>
										<content:encoded><![CDATA[<p>Ancient societies often faced profound challenges that tested their resilience, social frameworks, and cultural identities. One captivating inquiry in archaeology concerns how early civilizations responded to crises, particularly those involving the collapse of established social orders. Recent archaeological excavations led by the University of Copenhagen at the Early Bronze Age site of Murayghat in Jordan, dating back approximately 5,000 years, have begun to illuminate this question in unprecedented ways. This site offers a remarkable window into societal reorganization at a critical historical juncture.</p>
<p>Murayghat emerges as a focal site precisely during the transitional period following the Chalcolithic era, which lasted roughly from 4500 to 3500 BCE. The Chalcolithic phase was characterized by flourishing domestic settlements, rich symbolic and ritual traditions, distinctive copper tools, and numerous small-scale cultic shrines. However, climatic fluctuations and increasing social stressors appear to have precipitated the decline of this culture, leading to widespread societal transformations. Murayghat thus represents a critical archaeological testimony to these environmental and social upheavals.</p>
<p>In stark contrast with the Chalcolithic period’s dispersed domestic settlements centered around individual or family units, the Early Bronze Age occupation at Murayghat reveals a marked shift toward ritualized communal spaces. The site is notable for its dense clusters of dolmens, which are large stone burial monuments. Accompanying these are standing stones and a number of extensive megalithic constructions. Such architectural features strongly imply a landscape organized less around daily domestic life and more around ceremonial gatherings and collective burial practices.</p>
<p>Archaeological evidence underscores that Murayghat functioned as a nexus for social redefinition during a time absent of centralized political authority. The monumental stone constructions likely served not only as burial sites but also as powerful territorial markers and symbolic anchors for group identity. These visible and imposing monuments may have played critical roles in maintaining social cohesion and redefining community boundaries at a time when former societal hierarchies had fractured.</p>
<p>Extensive surveys have documented over 95 dolmens at Murayghat, signifying a complex ritual landscape. Central to the site is a hilltop area featuring stone-built enclosures that likely had ceremonial functions, supported by the presence of carved bedrock installations. These architectural and landscape features suggest a deliberate effort to establish new social rituals, possibly as a mechanism for managing transitions and uncertainties in identity and power structure.</p>
<p>Material culture recovered through excavations further illuminates the ritualized nature of Murayghat’s use. Finds include Early Bronze Age pottery, large communal bowls that may have been used for collective feasting, grinding stones, flint tools, animal horn cores, and a limited number of copper objects. This assemblage is indicative not just of subsistence activities but of ceremonial events involving food preparation and distribution, reinforcing the interpretation of Murayghat as a site fashioned for social and ritual interaction.</p>
<p>The spatial organization and visibility of the site also indicate its broader regional significance. Murayghat’s location and architectural prominence suggest it was a focal meeting place for disparate groups within the area, perhaps delivering a platform for negotiations, alliances, or conflict resolutions in the absence of dominant governing bodies. This offers key insight into how ancient communities constructed new forms of social order through public ritual and monumentality.</p>
<p>Susanne Kerner, the project’s lead archaeologist, interprets the Murayghat findings as evidence for communities responding creatively to crises by rejecting previous social models in favor of collective monument-building and ritual practices. This process of social reinvention at Murayghat reveals how early societies could assert new communal identities, delineate social roles, and stabilize fragmented populations via shared ceremonial landscapes.</p>
<p>The emphasis on megalithic architecture at Murayghat underscores the importance of tangibility and permanence in these new expressions of social cohesion. Unlike the smaller cultic shrines of the Chalcolithic period, the scale and visibility of the dolmens and standing stones manifest a conscious investment in monumentality, likely intended to anchor collective memory and territorial claims over extended periods.</p>
<p>The research at Murayghat challenges earlier assumptions that periods of collapse and disruption necessarily corresponded to cultural disintegration. Instead, the Early Bronze Age landscape indicates a complex adaptive response involving cultural innovation and reconfiguration of social networks. Such dynamics contribute to broader archaeological and anthropological models of resilience, emphasizing ritual and monumentality as adaptive strategies.</p>
<p>Further detailed studies, including geoarchaeological surveys and material analyses, continue to enhance understanding of the site’s chronology and function. Future interdisciplinary research, integrating environmental data and social theory, promises to refine interpretations of Murayghat’s role during this transformative epoch in human history.</p>
<p>The scholarly article detailing these findings, entitled &#8220;Dolmens, standing stones and ritual in Murayghat&#8221; by Susanne Kerner, was published in the journal Levant, offering an important addition to discussions on Early Bronze Age social dynamics and ritual practice.</p>
<p>Subject of Research: Early Bronze Age societal responses to climate and social disruption in Murayghat, Jordan<br />
Article Title: Dolmens, standing stones and ritual in Murayghat<br />
News Publication Date: 28-Jul-2025<br />
Web References: <a href="http://dx.doi.org/10.1080/00758914.2025.2513829">https://doi.org/10.1080/00758914.2025.2513829</a><br />
Image Credits: Susanne Kerner, University of Copenhagen<br />
Keywords: Early Bronze Age, Murayghat, Jordan, dolmens, megalithic architecture, ritual practice, social collapse, Chalcolithic culture, monumentality, archaeology, communal burial, prehistoric society</p>
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		<post-id xmlns="com-wordpress:feed-additions:1">92879</post-id>	</item>
		<item>
		<title>Mexican Cave Stalagmites Uncover Length and Intensity of Drought During Maya Collapse</title>
		<link>https://scienmag.com/mexican-cave-stalagmites-uncover-length-and-intensity-of-drought-during-maya-collapse/</link>
		
		<dc:creator><![CDATA[Russell Cooper]]></dc:creator>
		<pubDate>Wed, 13 Aug 2025 18:54:09 +0000</pubDate>
				<category><![CDATA[Athmospheric]]></category>
		<category><![CDATA[drought impact on ancient cultures]]></category>
		<category><![CDATA[environmental stressors in history]]></category>
		<category><![CDATA[geochemical techniques in archaeology]]></category>
		<category><![CDATA[Grutas Tzabnah cave study]]></category>
		<category><![CDATA[Mayan civilization collapse]]></category>
		<category><![CDATA[oxygen isotope analysis in stalagmites]]></category>
		<category><![CDATA[prolonged drought effects on societies]]></category>
		<category><![CDATA[rainfall patterns reconstruction]]></category>
		<category><![CDATA[seasonal climate variations in ancient civilizations]]></category>
		<category><![CDATA[sociopolitical transformations in Maya]]></category>
		<category><![CDATA[Terminal Classic period climate]]></category>
		<category><![CDATA[Yucatán Peninsula paleoclimate]]></category>
		<guid isPermaLink="false">https://scienmag.com/mexican-cave-stalagmites-uncover-length-and-intensity-of-drought-during-maya-collapse/</guid>

					<description><![CDATA[A prolonged and severe series of droughts, including one exceptional dry spell lasting thirteen years, may have significantly contributed to the collapse of the Classic Maya civilization, according to groundbreaking research analyzing oxygen isotope data extracted from a stalagmite in a cave located in Mexico’s Yucatán Peninsula. This innovative study unveils an unprecedented level of [&#8230;]]]></description>
										<content:encoded><![CDATA[<p>A prolonged and severe series of droughts, including one exceptional dry spell lasting thirteen years, may have significantly contributed to the collapse of the Classic Maya civilization, according to groundbreaking research analyzing oxygen isotope data extracted from a stalagmite in a cave located in Mexico’s Yucatán Peninsula. This innovative study unveils an unprecedented level of climatic detail for the Terminal Classic period of Maya history, enhancing our understanding of how prolonged environmental stressors intersected with sociopolitical transformations in one of the ancient world’s most sophisticated cultures.</p>
<p>Led by a team at the University of Cambridge, researchers employed state-of-the-art geochemical techniques to scrutinize the composition of oxygen isotopes within successive annual layers of a stalagmite sample, designated as Tzab06-1, recovered from the Grutas Tzabnah cave system. This approach allowed for an unparalleled reconstruction of rainfall patterns on a season-by-season basis between 871 and 1021 CE, a timeframe that coincides precisely with the Terminal Classic period—a phase characterized by dramatic sociopolitical upheaval and abandonment of southern Maya cities.</p>
<p>Unlike previous studies that relied on sediment core data offering broad, multi-year averages of regional climatic conditions, stalagmites present a micro-scale and seasonally resolved archive of paleoclimate. The mineral accretions in these cave formations grow incrementally as groundwater, enriched in isotopes reflective of precipitation input, drips from the cave ceiling. Each approximately one-millimeter-thick layer serves as a precise chronological marker, reflecting the chemical fingerprint of individual wet and dry seasons. This methodological advancement unearths a critical resolution that significantly refines the temporal alignment between environmental variables and archaeological events.</p>
<p>The research exposes eight distinct multi-year droughts during the Terminal Classic interval, each persisting for no less than three consecutive wet seasons. Most striking among these was a thirteen-year drought sequence—an extended episode of markedly reduced wet season rainfall. This hydrological stress would have severely strained the agricultural base of the Maya civilization, overriding even intensive water management systems such as reservoirs and cisterns that are known to have been employed in the region.</p>
<p>Historical and archaeological synchrony with this climatic record is compelling. Monumental construction activities and the political inscriptions that once chronicled Maya dynastic histories abruptly ceased at various key northern sites, including the illustrious city of Chichén Itzá, during intervals that closely correspond to these drought episodes. This evidence challenges simplistic explanations for the Maya collapse and accentuates the complex interplay between environmental hardship and societal resilience or failure.</p>
<p>Dr. Daniel H. James, lead author of the study and presently a postdoctoral fellow at University College London, emphasizes that isolating wet season data is pivotal. “Knowing total annual rainfall obscures crucial details,” James explains. “It is the wet season water availability that ultimately dictates crop success or failure. Our ability to identify specific drought durations within individual wet seasons opens a new dimension for analyzing ancient human-climate interactions.”</p>
<p>This research offers a refined timeline that not only confirms the importance of climate stress but also quantifies its temporal persistence and severity with unprecedented clarity. Prior stalagmite studies in the region delivered annual average rainfall reconstructions but fell short of resolving discrete wet and dry seasonal fluctuations, limiting the ability to link precise climatic events to sociopolitical changes.</p>
<p>The implications extend beyond archaeology and climate science into broader considerations of how past societies responded to persistent environmental challenges. The Maya collapse is widely regarded as a multifaceted phenomenon influenced by warfare, economic shifts, and external pressures; however, this stalagmite evidence illuminates the crucial role that environmental variability and prolonged drought played in destabilizing agricultural productivity and, by extension, societal structures.</p>
<p>Moreover, the study reveals that the Maya did not necessarily abandon affected cities outright during periods of severe drought but likely diverted resources and attention from monument construction and ceremonial practices toward immediate subsistence concerns. This nuanced understanding nuances previous interpretations that equated the cessation of monumental activity with total site abandonment.</p>
<p>The analytical techniques employed combine high-precision uranium-thorium dating with stable isotope geochemistry, yielding both age control and paleo-hydrological indicators. These methods allow researchers to overcome the temporal and spatial limitations inherent in lake sediment cores or tree-ring studies, providing a localized yet temporally intricate climatic narrative.</p>
<p>Future applications of this approach promise to unravel additional dimensions of Maya environmental history, including insights into tropical storm frequency and intensity, which are also encoded within speleothem isotopic proxies. James notes, “By extending precise climatic reconstructions to recent historical periods, we open new pathways for integrating environmental data with archaeological and epigraphic records.”</p>
<p>This innovative research was recently published in the journal <em>Science Advances</em> and was supported by funding from the National Geographic Society and the Leverhulme Trust. The study represents a major step forward in climatological archaeology by delivering a methodologically robust, seasonally specific climate record that underscores drought’s key role in one of antiquity’s greatest societal transformations.</p>
<hr />
<p><strong>Subject of Research</strong>: Climate-driven droughts and their impact on the collapse of the Classic Maya civilization, reconstructed through oxygen isotope analysis in stalagmites.</p>
<p><strong>Article Title</strong>: Classic Maya Response to Multi-Year Seasonal Droughts in Northwest Yucatán, Mexico</p>
<p><strong>News Publication Date</strong>: 13-Aug-2025</p>
<p><strong>Web References</strong>:<br />
<a href="http://dx.doi.org/10.1126/sciadv.adw7661">DOI link to article</a></p>
<p><strong>Image Credits</strong>: Mark Brenner</p>
<p><strong>Keywords</strong>: Droughts, Ancient architecture, Caves, Speleothems, Stalagmites, Physical geology, Climate change</p>
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