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[The] geology of the Singida kimberlite pipes, TanganyikaMannard, George W. January 1962 (has links)
Fifty-four kimberlite pipes and dykes cut Precambrian granite in the Singida region of Tanganyika. The pipes range from 60 to 2500 feet in diameter, and occur in clusters and lines. The lines follow fracture zones. In addition to intrusive kimberlite, the pipes contain massive to stratified kimberlite tuff and sedimentary-tuffaceous beds. Some pipes have jackets of explosion breccia. The Singida pipes represent the upper parts of kimberlite volcanoes. The kimberlite consists mostly of serpentine which has replaced olivine. Magnesium ilmenite, pyrope, dark green diopside and perovskite are characteristic accessory minerals. After consolidation, the kimberlite was entirely serpentinized, and partly carbonatized and silicified. The absolute age of the pipes is not known. Indirect evidence suggests an early Tertiary age. The Singida kimberlites may have been emplaced during an early ultrabasic phase of Tertiary-Recent alkaline volcanism of the Eastern Rift Valley.
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[The] geology of the Singida kimberlite pipes, TanganyikaMannard, George W. January 1962 (has links)
Fifty-four kimberlite pipes and dykes cut Precambrian granite in the Singida region of Tanganyika. The pipes range from 60 to 2500 feet in diameter, and occur in clusters and lines. The lines follow fracture zones. In addition to intrusive kimberlite, the pipes contain massive to stratified kimberlite tuff and sedimentary-tuffaceous beds. Some pipes have jackets of explosion breccia. The Singida pipes represent the upper parts of kimberlite volcanoes. The kimberlite consists mostly of serpentine which has replaced olivine. Magnesium ilmenite, pyrope, dark green diopside and perovskite are characteristic accessory minerals. After consolidation, the kimberlite was entirely serpentinized, and partly carbonatized and silicified. The absolute age of the pipes is not known. Indirect evidence suggests an early Tertiary age. The Singida kimberlites may have been emplaced during an early ultrabasic phase of Tertiary-Recent alkaline volcanism of the Eastern Rift Valley.
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The geology of the Singida kimberlite pipes, TanganyikaMannard, George W. January 1962 (has links)
No description available.
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Behind Closed Doors: From an Open Celebration to a Secret Practice : An Ethnographic Study of the Meaning and Function of Female Genital Mutilation/Circumcision in Singida, TanzaniaLelli, Therese January 2018 (has links)
This research examines the practice of Female Genital Mutilation/Circumcision (FGM/C) as a social phenomenon in Singida Region, Tanzania. The aim is to contribute to a deepened cultural anthropological understanding of the function and meaning behind the practice in Singida, and how it reacts to external factors of change, such as human rights-based laws and projects aiming to eradicate FGM/C. This was done by conducting an ethnographic field study, with the help of staff members from the Christian Council of Tanzania (CCT). Through the theoretical framework, aiming to grasp the complexity of FGM/C, aspects such as visible and invisible violence, patriarchal structures, social schemes, anomalies, change and rites, were analyzed on the collected material consisting of semi-structured interviews and participatory observations. From the conducted analysis, it was shown that FGM/C was a deeply imbedded cultural practice which purpose is to (1) enable women to consolidate to womanhood and ensure a full membership in society and (2) cure girls from a disease known as lawalawa. This is because the clitoris is believed to be connected to diseases and to enhance the risk of abnormal behavior that does not belong to womanhood. The thesis shows how lawalawa was fabricated as a reaction towards the ban on FGM/C in Tanzania and how it was used to (unknowingly or knowingly) justify the continuance of the practice. It was also showed that members of societies who engage in FGM/C, are likely to avoid abandoning FGM/C if possible, however change is achievable if it is implemented in a sensitive way with knowledge on local reaction towards external factors of change.
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