हमारा समूह 1000 से अधिक वैज्ञानिक सोसायटी के सहयोग से हर साल संयुक्त राज्य अमेरिका, यूरोप और एशिया में 3000+ वैश्विक सम्मेलन श्रृंखला कार्यक्रम आयोजित करता है और 700+ ओपन एक्सेस जर्नल प्रकाशित करता है जिसमें 50000 से अधिक प्रतिष्ठित व्यक्तित्व, प्रतिष्ठित वैज्ञानिक संपादकीय बोर्ड के सदस्यों के रूप में शामिल होते हैं।
ओपन एक्सेस जर्नल्स को अधिक पाठक और उद्धरण मिल रहे हैं
700 जर्नल और 15,000,000 पाठक प्रत्येक जर्नल को 25,000+ पाठक मिल रहे हैं
Chidera Ikechukwu V, Okpoko Ephraim I and Egbunike Michael E
The Maastrichtian - Danian age is well exposed around the Owerre-Ezukala area in the Anambra Basin of southeastern Nigeria. Two geologic units were encountered in the study area; Maastrichtian Ajali Formation and Danian Nsukka Formation. Outcrop sections were located, measured and described in detail following standard field methods. Pebble beds were sampled to evaluate their form indices which served as signatures of the paleoenvironment of deposition. The research methodologies were standard methods used in pebble morphological analysis. A total of one hundred and thirty pebbles were collected from three localities (Olo, Owerre–Ezukala and Ubaha). The following parameters were evaluated; Flatness Index (FI), Oblate-Prolate Index (OPI), Pebble form and Maximum Projection Sphericity (MPS). The mean values of FI, OPI and MPS (44.7%, -0.066, and 0.789 respectively), are suggestive of a fluvially agitated shallow marine environment (estuarine). Bivariate scatter plots of FI versus MPS and MPS versus OPI suggest fluvio-estuarine environment. Plots made on sphericity-form diagram suggest a transitional setting (probably fluvial to estuarine). The sedimentary facies analysis supports a fluvio-estuarine setting for the Maastrichtian – Danian age.