PROBLEMS OF GEOCHRONOLOGICAL INTERPRETATION IN A METAMORPHIC TERRAINALLSOPP HL.1977; BOTSWANA GEOL. SURV. DEPT, BULL.; BWA; DA. 1977; NO 12; PP. 179-182; BIBL. 7 REF.Conference Paper

RUBIDIUM-STRONTIUM GEOCHRONOLOGY OF GRANITIC ROCKS FROM THE MORRO VERMELHO AREA (TIGER BAY-ANGOLATORQUATO JR; ALLSOPP HL.1973; GEOL. RDSCH.; DTSCH. ; 1973, VOL. 62, NUM. 0001, P. 172 A 179Serial Issue

STRONTIUM ISOTOPIC EVIDENCE RELATING TO THE EVOLUTION OF THE LOWER PRECAMBRIAN GRANITIC CRUST IN SWAZILAND.DAVIES RD; ALLSOPP HL.1976; GEOLOGY; U.S.A.; DA. 1976; VOL. 4; NO 3; PP. 553-556; BIBL. 25 REF.; 3 ILL.Article

RB-SR ISOTOPIC AGES OF PRECAMBRIAN INTRUSIVES FROM QUEEN MAUD LAND, ANTARCTICA.ALLSOPP HL; NEETHLING DC.1970; EARTH PLANET. SCI. LETTERS; NLD; 1970(3), VOL. 8, NUM. 0001, P. 66 A 70Miscellaneous

RB/K RATIOS AND SR-ISOTOPIC COMPOSITIONS OF MINERALS IN ECLOGITIC AND PERIDOTITIC ROCKS.ALLSOPP HL; NICOLAYSEN LO.1968; EARTH PLANET. SCI. LETTERS; NLD; 1968(12), VOL. 5, NUM. 0004, P. 231 A 244Miscellaneous

LOW ⁸⁷SR/⁸⁶SR RATIOS IN FRESH SOUTH AFRICAN KIMBERLITESBERG GW; ALLSOPP HL.1972; EARTH PLANET. SCI. LETTERS; NETHERL.; 1972, VOL. 16, NUM. 0001, P. 27 A 30Serial Issue

MEASUREMENTS RELATING TO THE GENESIS OF THE TSUMEB PIPE, SOUTH WEST AFRICA.ALLSOPP HL; FERGUSON J.1970; EARTH PLANET. SCI. LETTERS; NLD; 1970(11), VOL. 9, NUM. 0005, P. 448 A 453Miscellaneous

RB-SR AND U-PB DETERMINATIONS ON SOUTHERN AFRICAN KIMBERLITE PIPESALLSOPP HL; KRAMERS JD.sdINTERNATIONAL KIMBERLITE CONFERENCE. 2/1977/SANTA FE NM; USA; DA. S.D.; 3 P.; BIBL. 6 REF.Conference Paper

ISOTOPE GEOLOGY.DODSON MH; REX DC; ALLSOPP HL et al.1971; UNIV. LEEDS, RES. INST. AFR. GEOL., ANNU. REP; GBR; 1971, VOL. 15, P. 51 A 52Miscellaneous

DATING SOME SIGNIFICANT EVENTS IN THE HISTORY OF THE SWAZILAND SYSTEM BY THE RB-SR ISOCHRON METHOD.ALLSOPP HL; ULRYCH TJ; NICOLAYSEN LO et al.1968; CANAD. J. EARTH SCI.; CAN; 1968(6), VOL. 5, NUM. 0003-002 , P. 605 A 619Miscellaneous

A MINIMUM AGE FOR THE PREMIER KIMBERLITE PIPE YIELDED BY BIOTITE RB-SR MEASUREMENTS,WITH RELATED GALENA ISOTOPIC DATA.ALLSOPP HL; BURGER AJ; VAN ZYL C et al.1967; EARTH PLANET. SCI. LETTERS; NLD; 1967, VOL. 3, NUM. 0002, P. 161 A 166Miscellaneous

S-ISOTOPIC STUDIES ON VARIOUS LAYERED MAFIC INTRUSIONS IN SOUTHERN AFRICA.DAVIES RD; ALLSOPP HL; ERLANK AJ et al.1970; GEOL. SOC. S. AFR., SPEC. PUBL; ZAF; 1970, NUM. 0001, P. 576 A 593Miscellaneous

REVIEW OF RB-SR AGE MEASUREMENTS FROM THE EARLY PRECAMBRIAN TERRAIN IN THE SOUTH-EASTERN TRANSVAAL AND SWAZILAND.ALLSOPP HL; DAVIES RD; DE GASPARIS AAA et al.1969; GEOL. SOC. S. AFR., SPEC. PUBL; ZAF; 1969(7), NUM. 0002, P. 433 A 444Miscellaneous