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Syn- and Post-collisional Granitoids Geosites of the Rio Doce Magmatic Arc, Espírito Santo State, Southeastern Brazil
Geoheritage ( IF 2.9 ) Pub Date : 2023-11-01 , DOI: 10.1007/s12371-023-00893-y
José Adilson Dias Cavalcanti , Valter Salino Vieira , Diego Guilherme da Costa Gomes , Carlos Schobbenhaus , Marilda Santana da Silva , Ariadne Marra de Souza , Naoki Arima

Geosites in syn- and post-collisional granitoid rocks of the Rio Doce Magmatic Arc are important markers of the tectonic environments associated with the amalgamation of the western portion of Gondwana during the Neoproterozoic. Another aspect that stands out in these geosites is the relief that resulted from the breakup of Pangea with the opening of the South Atlantic Ocean and the action of the climate propitiating the alteration of the rocks and the soil erosion during the Cenozoic, leaving a landscape full of inselbergs that allow us to reach minerals, rocks, and structures that were formed between 630 and 480 Ma. The morphology of syn-collisional granitoid geosites is controlled by NNW-SSE fractures of Colatina lineament, and secondarily, by a shear fracture pair of WNW-ESE and WSW-ENE directions. In post-collisional granitoid geosites, the main control is the shape of the intrusion, and secondarily, a pair of shear fractures of WNW-ESE and WSW-ENE directions. The State of Espírito Santo has a strong connection between rural communities and cities with the local geology. Several initiatives to preserve this landscape can be noticed in the different tourist areas, such as the Pontões Capixabas Natural Monument and Pedra Azul State Park. Espírito Santo is a good example of geoconservation in Brazil, but at the same time, it needs to be aware of its geotourism potential, which can contribute to the local rural communities. For this, actions are needed to spread geological knowledge in schools, by training guides and taking this information to rural communities through new routes and using existing routes combined with geological knowledge, geodiversity, and cultural manifestations of the region.



中文翻译:

巴西东南部圣埃斯皮里图州里约多西岩浆弧的同碰撞和碰撞后花岗岩地质遗址

里约多西岩浆弧同碰撞和碰撞后花岗岩类岩石中的地质遗迹是与新元古代冈瓦纳西部地区合并相关的构造环境的重要标志。这些地质遗迹中另一个突出的方面是,随着南大西洋的开放,盘古大陆的分裂以及新生代期间气候的作用促进了岩石的改变和土壤侵蚀,从而形成了充满景观的地貌。岛屿山使我们能够到达 630 至 480 Ma 之间形成的矿物、岩石和结构。同碰撞花岗岩地质遗址的形态受 Colatina 线状的 NNW-SSE 裂缝控制,其次受 WNW-ESE 和 WSW-ENE 方向的剪切裂缝对控制。在碰撞后花岗岩地质遗迹中,主要控制因素是侵入体的形状,其次是一对WNW-ESE和WSW-ENE方向的剪切裂缝。圣埃斯皮里图州的农村社区和城市与当地地质有着密切的联系。在不同的旅游区,例如蓬托斯卡皮萨巴斯自然纪念碑和佩德拉阿祖尔州立公园,我们可以看到一些保护这一景观的举措。圣埃斯皮里图州是巴西地质保护的一个很好的例子,但与此同时,它需要意识到其地质旅游潜力,这可以为当地农村社区做出贡献。为此,需要采取行动在学校传播地质知识,通过培训导游并通过新路线并利用现有路线结合该地区的地质知识、地质多样性和文化表现形式将这些信息带到农村社区。

更新日期:2023-11-02
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