QUATERNARY COLLUVIAL DEPOSITS AS GEOARCHIVES OF THE SOIL–LANDSCAPE RELATIONSHIP IN THE SEMI-ARID REGION: EVIDENCE FROM THE SERRA DA TAQUARA MASSIF (PE), BRAZIL / SEDIMENTOS COLUVIAIS QUATERNÁRIOS COMO GEOARQUIVOS DA RELAÇÃO SOLO–PAISAGEM NO SEMIÁRIDO: EVIDÊNCIAS DO MACIÇO DA SERRA DA TAQUARA (PE), BRASIL
DOI:
https://doi.org/10.66049/Palavras-chave:
Colúvio ; Geoarquivos; SemiáridoResumo
Os depósitos coluviais quaternários do Maciço da Serra da Taquara (PE/Brasil) foram investigados como geoarquivos
da relação solo–paisagem em ambiente semiárido. O estudo objetivou avaliar a dinâmica pedosedimentar e o
intemperismo químico por meio de análises granulométricas e geoquímicas em quatro perfis coluviais distribuídos ao
longo de uma topossequência. Foram aplicadas granulometria a laser, fluorescência de raios X e o Índice Químico de
Alteração (Chemical Index of Alteration – CIA). Os resultados evidenciaram forte controle morfotopográfico sobre a
evolução geoquímica, com maior intensidade de intemperismo nos setores mais estáveis da vertente. Os depósitos
registram retrabalhamento sedimentar, estabilidade pedogenética e oscilações paleoambientais quaternárias,
confirmando o potencial dos colúvios como geoarquivos estratégicos da evolução morfopedológica do semiárido
brasileiro.
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