19 research outputs found
Detection of the Togninia Teleomorph of Phaeoacremonium aleophilum in Australia
Moist incubation of grapevine wood infected with both Phaeoacremonium aleophilum and Phaeomoniella
chlamydospora yielded an ascomycete referable to the genus Togninia (Ascomycota, Calosphaeriales). Single ascospore
cultures were morphologically identical to Pm. aleophilum. The rDNA ITS sequence of single ascospore
isolates was identical to published sequences for the majority of Pm. aleophilum isolates. Comparison with the morphology
of other wood staining Togninia species confirms that the teleomorph of Pm. aleophilum is Togninia minima
Sedimentation record in the Konkan-Kerala Basin: implications for the evolution of the Western Ghats and the Western Indian passive margin
The Konkan and Kerala Basins constitute a major depocentre for sediment from the onshore hinterland of Western India and as such provide a valuable record of the timing and magnitude of Cenozoic denudation along the continental margin. This paper presents an analysis of sedimentation in the Konkan-Kerala Basin, coupledwith a mass balance study, and numerical modelling of flexural responses to onshore denudational unloading and o¡shore sediment loading in order to test competing conceptual models for the development of high-elevation passive margins. The Konkan-Kerala Basin contains an estimated 109,000 km<sup>3</sup>; of Cenozoic clastic sediment, a volume difficult to reconcile with the denudation of a downwarped rift flank onshore, and more consistent with denudation of an elevated rift flank. We infer from modelling of the isostatic response of the lithosphere to sediment loading offshore and denudation onshore that flexure is an important component in the development of the Western Indian Margin.There is evidence for two major pulses in sedimentation: an early phase in the Palaeocene, and a second beginning in the Pliocene. The Palaeocene increase in sedimentation can be interpreted in terms of a denudational response to the rifting between India and the Seychelles, whereas the mechanism responsible for the Pliocene pulse is more enigmatic