scholarly journals (1) The Geology of the Goldfields of British Guiana (2) The Ore Deposits of South Africa

Nature ◽  
1909 ◽  
Vol 80 (2066) ◽  
pp. 395-396
Author(s):  
J. W. G.
Keyword(s):  
South Africa ◽  
Ore Deposits ◽  
British Guiana

Orthezia insignis. [Distribution map].

1957 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
Central America ◽  
West Indies ◽  
Distribution Map ◽  
British Guiana ◽  
Orthezia Insignis ◽  
Egg Plant ◽  
Southern Rhodesia ◽  
New Distribution ◽  
Distribution In Europe

Abstract A new distribution map is provided for Orthezia insignis Browne. Hosts: Citrus, Lantana, egg-plant, sweet-potato, rose; polyphagous. Information is given on the geographical distribution in EUROPE (excl. USSR), Italy, ASIA (excl. USSR), Ceylon, India, Malaya, USSR, AFRICA, Algeria, Belgian, Egypt, Kenya, Madagascar, Madeira, Mauritius, Nigeria, Réunion, San Thomé, Southern Rhodesia, Tanganyika, Union of South Africa, NORTH AMERICA, U.S.A., CENTRAL AMERICA and WEST INDIES, Costa Rica, West Indies, SOUTH AMERICA, Argentina, Brazil, British Guiana, Paraguay, Peru, Surinam, Venezuela.

The Ore Deposits of South Africa. Part ii

1910 ◽  
Vol 35 (2) ◽  
pp. 188
Author(s):  
J. P. Johnson
Keyword(s):  
South Africa ◽  
Ore Deposits

scholarly journals (1) The Ore Deposits of South Africa (2) The Geology of Ore Deposits

Nature ◽  
1910 ◽  
Vol 84 (2132) ◽  
pp. 293-293
Author(s):  
J. W. G.
Keyword(s):  
South Africa ◽  
Ore Deposits

scholarly journals An overview of global layered intrusions, with a special focus on the Bushveld Complex, South Africa

2021 ◽  
Author(s):  
W.D. Maier ◽  
◽  
Qun-Ke Xia ◽  
Keyword(s):  
South Africa ◽  
Bushveld Complex ◽  
Ore Deposits ◽  
Reactive Flow ◽  
Special Focus ◽  
Potential Importance ◽  
Layered Intrusions ◽  
Merensky Reef ◽  
Research Questions ◽  
Water Contents

Layered intrusions host some of the world’s most important ore deposits, yet their global distribution, age, and petrogenesis remain poorly known. Here we provide an update on our current understanding and highlight some key outstanding research questions, notably on the potential importance of reactive flow. We present some preliminary data on water contents of Bushveld orthopyroxenes from which we calculated the water contents of the magma. The analysed Bushveld rocks, including the Merensky Reef, crystallised from relatively water-poor magma, similar to many other continental basalts.

Phakopsora gossypii. [Descriptions of Fungi and Bacteria].

1968 ◽  
Author(s):  
E. Punithalingam
Keyword(s):  
South Africa ◽  
Puerto Rico ◽  
Central America ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
West Indies ◽  
Ivory Coast ◽  
New Caledonia ◽  
British Guiana ◽  
Thespesia Populnea

Abstract A description is provided for Phakopsora gossypii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Gossypium acuminatum, G. arboreum, G. aridium, G. barbadense, G. brasiliense, G. herbaceum, G. mexicanum, G. microcarpum, Gossypium sp. (cult.), Azanza garckeana and Thespesia populnea. DISEASE: Cotton rust. Confined to the growing tissues, chiefly the leaves and spreading from the older parts to the new leaves as rapidly as they are formed causing premature defoliation. The attack is severe on weak plants. GEOGRAPHICAL DISTRIBUTION: Africa (Agalega Is. (near Mauritius), Congo, Ghana, Ivory Coast, Kenya, Mauritius, Nigeria, Sierra Leone, Somalia, South Africa, Tanzania, Uganda); Asia (Burma, Cambodia, Ceylon, China, Fiji, Formosa, India, Java, New Guinea, New Caledonia, Philippines, Thailand); North America (Bermuda, U.S.A.); Central America and West Indies (Cuba, Dominican Republic, Grenada, Haiti, Jamaica, Puerto Rico, St. Vincent, Trinidad); South America (Brazil, British Guiana, Colombia, Ecuador, Venezuela). (CMI Map 258, 1952, Herb IMI and Literature) TRANSMISSION: Airborne urediospores account for the spread of the rust.

Howardia biclavis. [Distribution map].

1957 ◽  
Author(s):  
Keyword(s):  
South Africa ◽  
South America ◽  
Central America ◽  
West Indies ◽  
Pacific Islands ◽  
Distribution Map ◽  
Bonin Islands ◽  
British Guiana ◽  
Southern Rhodesia ◽  
New Distribution

Abstract A new distribution map is provided for Howardia biclavis (Comst.) (Mining Scale) Hosts: Citrus and other tropical and subtropical fruits, coffee, cacao, etc. Information is given on the geographical distribution in ASIA, Bonin Islands, Ceylon, India, Indonesia, AFRICA, Ghana, Kenya, Mauritius, Nyasaland, San Thomé, Southern Rhodesia, Tanganyika, Union of South Africa, AUSTRALASIA, and PACIFIC ISLANDS, Australia, Fiji, Hawaii, NORTH AMERICA, U.S.A., CENTRAL AMERICA and WEST INDIES, Panama, West Indies, SOUTH AMERICA, Brazil, British Guiana, Venezuela.

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