NORTH AMERICAN CRYPTOEXPLOSION STRUCTURES: INTERPRETED AS DIAPIRS WHICH OBTAIN RELEASE FROM STRONG LATERAL CONFINEMENT.NICOLAYSEN LO.1972; GEOL. SOC. AMER. MEM.; U.S.A.; 1972, NUM. 0132, P. 605 A 620Serial Issue

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

A NEW INTERPRETIVE PROCEDURE FOR WHOLE ROCK U-PB SYSTEMS APPLIED TO THE VREDEFORT CRUSTAL PROFILE = NOUVELLE METHODE D'INTERPRETATION DES TECHNIQUE U-PB POUR ROCHE TOTALE APPLIQUEE AU PROFIL CRUSTAL DE VREDEFORTWELKE HJ; NICOLAYSEN LO.1981; JGR. J. GEOPHYS. RES. B; ISSN 0196-6936; USA; DA. 1981-11-10; VOL. 86; NO 11; PP. 10681-10687; BIBL. 16 REF.; 4 TAB. ; ILL.Article

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

RADIOELEMENT CONCENTRATIONS IN THE DEEP PROFILE THROUGH PRECAMBRIAN BASEMENT OF THE VREDEFORT STRUCTURE = LES CONCENTRATIONS D'ELEMENTS RADIOACTIFS DU PROFIL EN PROFONDEUR A TRAVERS LE SOCLE PRECAMBRIEN DU DOME VREDEFORTHART RJ; NICOLAYSEN LO; GALE NH et al.1981; JGR. J. GEOPHYS. RES. B; ISSN 0196-6936; USA; DA. 1981-11-10; VOL. 86; NO 11; PP. 10639-10652; BIBL. 33 REF.; 150 ANAL.; 7 TAB. ; ILL.Article

THE VREDEFORT RADIOELEMENT PROFILE EXTENDED TO SUPRACRUSTAL STRATA AT CARLETONVILLE, WITH IMPLICATIONS FOR CONTINENTAL HEAT FLOW = EXTENSION DU PROFIL DES ELEMENTS RADIOACTIFS DE VREDEFORT AUX COUCHES SUPRACRUSTALES DE CARLETOUVILLE; CONSEQUENCES POUR LE FLUX THERMIQUE CONTINENTALNICOLAYSEN LO; HART RJ; GALE NH et al.1981; JGR. J. GEOPHYS. RES. B; ISSN 0196-6936; USA; DA. 1981-11-10; VOL. 86; NO 11; PP. 10653-10661; BIBL. 23 REF.; 8 TAB. ; ILL.Article

CO₂-RICH FLUID INCLUSIONS IN THE POLYMETAMORPHIC BASEMENT ROCKS OF THE VREDEFORT STRUCTURE, SOUTH AFRICA, AND THEIR POSSIBLE BEARING ON ITS ORIGINSCHREYER W; MENDENBACH O; ABRAHAM K et al.sdINTERNATIONAL KIMBERLITE CONFERENCE. 2/1977/SANTA FE NM; USA; DA. S.D.; 3 P.; BIBL. 10 REF.Conference Paper

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

THE VARIATION OF ISOTOPIC TRACERS WITH DEPTH IN THE SOUTH AFRICAN CRUST, AND ITS BEARING ON EARLY CRUSTAL DIFFERENTIATION AND COOLING.HART RJ; NICOLAYSEN LO; SLAWSON WF et al.1974; IN: INT. MEET. GEOCHRONOL. COSMOCHRONOL. ISOT. GEOL.; PARIS; 1974; S.L.; 1974, P. 1Miscellaneous