1    Corresponding Main Metallogenic Epochs to Key Geological Events in the North China Craton: An Example for Secular Changes in the Evolving Earth    
Mingguo Zhai and Xiyan Zhu
Part I Archean Crustal Growth and Metallogeny
2    Archean Continental Crust in the Southern North China Craton 

Chunrong Diwu, Chengli Zhang, and Yong Sun
3    Structural Architecture and Spatial-Temporal Distribution of the Archean Domains in the Eastern North China Craton    
Peng Peng

In the years since the 1977 Aegean conferences in Athens and Izmir there has been an explosion of new information on the Eastern Mediterranean, particularly on the Turkish area. Some three years ago we sensed that the time might be ripe for a meeting to consider all aspects of geology relevant to the tectonic evolution of the Eastern Mediterranean. We sounded out opinion in most of the European laboratories involved and received enthusiastic support for the idea. The boundaries of the area to be discussed were fixed early on: the Apennines to the west, the Carpathians and Caucasus to the north, the Zagros to the east and North Africa to the south. The meeting concentrated on the Late Palaeozoic to Recent evolution, as few coherent tracts of older rocks exist in the area. 

Большакова Л. Н., Геккер М. Р., Ивановский А. Б., Космынин В. Н., Соколов Б. С., Улитина Л. М. Основные направления эволюции коралловых рифов
Овчинникова Г. В., Неймарк Л.А., Левченков О. А., Комаров А. Н., Гороховский Б.М., Киселева Е.И., Шулешко И.К. Возможности использования апатитов в U-Pb геохронологии
Горохов И.М., Дюфур М.С., Неймарк Л.А. Амелин Ю.В., Овчинникова Г.В., Гороховский Б.М. Раннепалеозойские фрагменты Гондваны в покровах Центрального Памира и Низких Гималаев: геохимические и изотопные характеристики
Сергеев В.Н. Окремненные микрофоссилии рифея Анабарского поднятия

Amonп the major results of the Upper Mantle Project, two are especially significant. First, it has been clearly demonstrated that the earth is not radially symmetric: important lateral inhomogeneities exist in the uppermost 700 kilometers. Second, it is now clear that large-scale motions of the upper parts of the earth are taking place now and have taken place in the past.

T.C. BIRKETT, N. MARCHILDON, S. PARADIS and R. GODUE
The Grenville Province to the east of Val d’Or, Quebec: a geological reconnaissance and a possible extension of the Abitibi greenstone belt in the Grenville parautochthonous belt
J. ADAMS, R.J. WETMILLER, J. DRYSDALE and H.S. HASEGAWA The first surface rupture from an earthquake in eastern North America
G.S. LEVESQUE, E.M. CAMERON and A.E. LALONDE
Duality of magmatism along the Kirkland Lake- Larder Lake fault zone, Ontario
J.B. PERCIVAL
Preliminary assessment of wallrock alteration in uranium open-pit mines, Athabasca basin, Saskatchewan: mineralogical and chemical characterization
A.G. GALLEY, B. SALMON and I.R. JONASSON

Although this report includes the results of a 6-month reconnaissance investigation of the geology and mineral resources of Paraguay, it is essentially a compilation and interpretation of existing published and unpublished information on the subject.
The rocks can be divided into five major classes, depending on age and mode of origin.

All major Appalachian tectonostratographic zones in Gaspesie, Quebec and New Brunswick (i.e. Humber, Dunnage, Gander, and Avalon) are intruded by Paleozoic granites. Granite petrological and geochemical data assist in evaluating the economic potential of the plutons and provide insight into the crustal and tectonic evolution of the orogen.
Based on Na2O and Al index values (generally >3.2 wt.% and <1.1 respectively) and high-field strength element contents, most of the granites are 1-types; some have "А-type affinities". Granite chemical and isotopic characteristics distinguish three contrasting groups of granites: Humber-Dunnage, Gander, and Avalon. Positive eNd values for Humber, Dunnage, and Avalon granites indicate melting of predominately juvenile sources. Negative e Nd and elevated 201РЫШРЬ and 518 values for Gander granites are consistent with reworking of older (1.1-1.8 Ga) crust containing a significant supracrustal component. Neodymium isotopic data effectively rules out Grenville basement as a source for Humber-Dunnage granites. Gander zone is apparently the autochthonous surface expression of a distinct lower crustal block. Contrasting e Nd signatures from Avalon and Gander granites indicates that Gander and Avalon zones are underlain by different crustal blocks, i.e. Precambrian Avalon basement is not a suitable protolith for Gander granites.<...>

Рассматриваются общие и региональные вопросы стратиграфии, палеонтологии, литологии, палеогеографии докембрия и фанерозоя различных областей Восточно-Европейской и Сибирской древних платформ, Урало-Монгольского, Тихоокеанского и Средиземноморского геосинклинальноскладчатых поясов.