J.L. Orpen

First direct radiometric dating of Archaean stromatolitic limestone

S. Moorbath, Paul N. Taylor, J.L. Orpen et al. · Nature · 1987 · 161 citations

Isotope Analysis, Engineering, Absolute Dating +4

Granite-greenstone terrains of the Rhodesian Archaean craton

James F. Wilson, J.L. Orpen, M. J. Bickle et al. · Nature · 1978 · 106 citations

Engineering, Rhodesian Archaean Craton, Greenstone Belt +3

Pb/Pb, SmNd and RbSr geochronology in the Archean Craton of Zimbabwe

Paul N. Taylor, J.D. Kramersb, S. Moorbatha et al. · Chemical Geology Isotope Geoscience section · 1991 · 84 citations

Stromatolites at ∼3,500 Myr and a greenstone–granite unconformity in the Zimbabwean Archaean

J.L. Orpen, James F. Wilson · Nature · 1981 · 49 citations

Biology, Organic Geochemistry, Engineering +9

Wrench-fault and half-graben tectonics in the development of the Palaeozoic Zambezi Karoo Basins in Zimbabwe — the “Lower Zambezi” and “Mid-Zambezi” basins respectively — and regional implications

J.L. Orpen, Christopher J. Swain, Chris Nugent et al. · Journal of African Earth Sciences (and the Middle East) · 1989 · 44 citations

“ Mid-zambezi ”, Engineering, Geography +8