Oliveira Ana Paula G, Machado Rômulo, Ribeiro Alisson A, Mioto Camila L, Marcato Júnior José, Saad Antonio R, Sígolo Joel B, Paranhos Filho Antonio C
Programa de Mestrado em Análise Geoambiental, Universidade de Guarulhos/UNG, Praça Tereza Cristina, 239, 07023-070 Guarulhos, SP, Brazil.
Universidade de São Paulo, Instituto de Geociências, Rua do Lago, 562, Butantã, 05508-080 São Paulo, SP, Brazil.
An Acad Bras Cienc. 2018 Apr-Jun;90(2):1293-1308. doi: 10.1590/0001-3765201820170474.
Pantanal da Nhecolândia is one of the most well-preserved areas in the State of Mato Grosso do Sul. Located in the southern part of the Taquari River megafan, it is in tectonic contact with the fault escarpments of the Maracaju-Campo Grande plateaus to the east and with the fault escarpments of the Bodoquena plateau to the west, which continue to north. To the south and to the north, the limits are marked respectively by the lineaments of the Negro and Taquari Rivers. Nhecolândia is characterized by the existence of at least 17,631 lagoons, 17,050 (96.70 %) of which are of fresh water (baías) and 577 (3.3 %) of salty water (salinas). Studies based on (Landsat) satellite images and use of free software (QGIS, version 2.8.3) and GIS (Geographic Information Systems) revealed that the major axes of the lagoons are aligned along two directions, NE (62.49 %) and NW (37.51 %), with modes concentrated between N30-40E and N30-40W, suggesting in both cases the role played by tectonic control (neotectonics) in their formation. Evidences of fluvial origin are presented for these groups of lagoons, as well as for their tectonic alignment.
大沼泽地是南马托格罗索州保存最完好的地区之一。它位于塔夸里河巨型扇的南部，在构造上与东部的马拉卡茹-大坎普高原断层悬崖以及西部的博多克纳高原断层悬崖接触，这些断层悬崖向北延伸。在南部和北部，边界分别由内格罗河和塔夸里河的线性特征标记。大沼泽地的特点是至少有17631个泻湖，其中17050个（96.70%）是淡水湖（baías），577个（3.3%）是咸水湖（salinas）。基于（陆地卫星）卫星图像以及使用免费软件（QGIS，2.8.3版本）和地理信息系统（GIS）的研究表明，泻湖的主轴线沿两个方向排列，东北方向（62.49%）和西北方向（37.51%），模式集中在N30 - 40E和N30 - 40W之间，这表明在这两种情况下构造控制（新构造）在它们形成过程中所起的作用。这些泻湖群以及它们的构造排列都有河流起源的证据。
