Late Quaternary palaeoenvironmental controls on concentric talus evolution in the Central Ebro Basin (NE Spain)

Abstract The polyphasic evolution of the testimonial buttes in central area Ebro basin (Los Monegros) is analysed. This a semiarid that favours high erosion rates. An evolutionary model Jubierre hills presented shows environmental cycles represented by aggradational and degradative processes on slopes resulted present arrangement talus flatiron rings. In four studied cases, relicts are composed detritic material from disappeared caprock pediment. Four slope stages (S4 to S1) formed under stable climate conditions identified. Older S3) estimated comparison with other flatirons region. S2 stage contains Bronze Age archaeological remains radiocarbon age obtained was 1608–1446 years cal BC (2σ), while S1 younger. A palaeoenvironmental interpretation made for these S1). active led relief inversion, remain as only features revealing presence relict past human occupations.