scholarly journals The Messinian stromatolites of the Sierra del Colmenar (Western Mediterranean): facies characterization and sedimentological interpretation

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5766 ◽  
Author(s):  
Patricio Guillermo Villafañe ◽  
Hugo Corbí ◽  
Carlos Cónsole-Gonella ◽  
Francisco Javier Ruiz-Sánchez ◽  
Jesús Miguel Soria

A representative outcrop of the Messinian stromatolites belonging to the Terminal Carbonate Complex unit, from the northern sector of the Bajo Segura basin (Caja de Ahorros del Mediterraneosection, Sierra del Colmenar, SE Spain) has been studied. Here, we present a detailed analysis of the architecture, external morphology, and internal morphology in order to reconstruct the environmental and palaeoecological conditions for their growth. The stromatolites macrostructure consists of a continuously doming type morphology (build up and sheets areas). These developed close to the coast and acted as a palaeogeographic barrier, reducing physical stress, channeling the erosive effect of water and favoring restricted conditions. This stromatolitic macrostructure exhibits variations in its internal morphology, giving rise to seven subfacies, which are a product of the environmental changes experienced during the growth of the microbial mats. Although broadly suggesting a coastal environment, restricted and shallow during formation, the variation in internal morphology (mesostructure and microstructure) is evidence of minor changes in the physical environment that indicate a progressive shallowing.

2018 ◽  
Author(s):  
Patricio Guillermo Villafañe ◽  
Hugo Corbí ◽  
Carlos Cónsole-Gonella ◽  
Francisco Javier Ruiz-Sánchez

The Messinian stromatolites belonging to the Terminal Carbonate Complex unit, from the northern sector of the Bajo Segura Basin (CAM section, Sierra del Colmenar, SE Spain) have been studied. To understand the direct relationship between the morphologies of the stromatolites and their deposition context in order to reconstruct the environmental conditions for their growth, a detailed study of their architecture, external morphology and internal morphology was carried out (macrofabric and microfabric). The stromatolites are made up of domic bodies laterally linked to each other, generating a macrostructure (bioherms) with lateral continuity. This stromatolitic macrostructure presents variations in its internal morphology, giving rise to seven subfacies product of the environmental changes experienced during the growth of the microbial bushes. The stromatolites are arranged parallel of coastline acting as paleogeographic barriers to reduce the physical stress of the environment. Although in general lines suggests a coastal environment, restricted and shallow for the formation of the whole level, the variation in internal morphology is evidence of minor changes in the physical environment.


2018 ◽  
Author(s):  
Patricio Guillermo Villafañe ◽  
Hugo Corbí ◽  
Carlos Cónsole-Gonella ◽  
Francisco Javier Ruiz-Sánchez

The Messinian stromatolites belonging to the Terminal Carbonate Complex unit, from the northern sector of the Bajo Segura Basin (CAM section, Sierra del Colmenar, SE Spain) have been studied. To understand the direct relationship between the morphologies of the stromatolites and their deposition context in order to reconstruct the environmental conditions for their growth, a detailed study of their architecture, external morphology and internal morphology was carried out (macrofabric and microfabric). The stromatolites are made up of domic bodies laterally linked to each other, generating a macrostructure (bioherms) with lateral continuity. This stromatolitic macrostructure presents variations in its internal morphology, giving rise to seven subfacies product of the environmental changes experienced during the growth of the microbial bushes. The stromatolites are arranged parallel of coastline acting as paleogeographic barriers to reduce the physical stress of the environment. Although in general lines suggests a coastal environment, restricted and shallow for the formation of the whole level, the variation in internal morphology is evidence of minor changes in the physical environment.


Anthropocene ◽  
2021 ◽  
Vol 33 ◽  
pp. 100278
Author(s):  
Francisca Alba-Sánchez ◽  
Daniel Abel-Schaad ◽  
José Antonio López-Sáez ◽  
Silvia Sabariego-Ruiz ◽  
Sebastián Pérez-Díaz ◽  
...  

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Luisa V. Giles ◽  
Michael S. Koehle ◽  
Brian E. Saelens ◽  
Hind Sbihi ◽  
Chris Carlsten

Abstract Background The physical environment can facilitate or hinder physical activity. A challenge in promoting physical activity is ensuring that the physical environment is supportive and that these supports are appropriately tailored to the individual or group in question. Ideally, aspects of the environment that impact physical activity would be enhanced, but environmental changes take time, and identifying ways to provide more precision to physical activity recommendations might be helpful for specific individuals or groups. Therefore, moving beyond a “one size fits all” to a precision-based approach is critical. Main body To this end, we considered 4 critical aspects of the physical environment that influence physical activity (walkability, green space, traffic-related air pollution, and heat) and how these aspects could enhance our ability to precisely guide physical activity. Strategies to increase physical activity could include optimizing design of the built environment or mitigating of some of the environmental impediments to activity through personalized or population-wide interventions. Conclusions Although at present non-personalized approaches may be more widespread than those tailored to one person’s physical environment, targeting intrinsic personal elements (e.g., medical conditions, sex, age, socioeconomic status) has interesting potential to enhance the likelihood and ability of individuals to participate in physical activity.


2015 ◽  
Vol 12 (3) ◽  
pp. 645-671 ◽  
Author(s):  
J. L. López-Jurado ◽  
R. Balbín ◽  
B. Amengual ◽  
A. Aparicio-González ◽  
M. L. Fernández de Puelles ◽  
...  

Abstract. In the Western Mediterranean, the IEO-RADMED monitoring program is already conducting many of the evaluations required under the Marine Strategy Framework Directive (MFSD) along the Spanish Mediterranean coast. The different aspects of the ecosystem that are regularly sampled under this monitoring program are the physical environment and the chemical and biological variables of the water column, together with the planktonic communities, biomass and structure. Moreover, determinations of some anthropogenic stressors on the marine environment, as contaminants and microplastics, are under develop. Data are managed and stored at the IEO Data Center that works under the SeaDataNet infrastructure and are also stored under the IBAMar database. In combination with remote sensing data they are used to address open questions on the ecosystem in the Western Mediterranean sea.


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