**6. Conclusion**


**Period**

**24**

Patterson (1986)

9.35

 28.5

 410

 36.4

 13.65

 12.8

 25.8

 0.065

 0.27

<0.004

—

<0.33

 2.5

335

—

report

Present study

7.17

 26.1

 299

 29.68

 39.67

 6.89

 11.39

 0.064

 0.612

 0.0039

 0.456

 1.03

 5.67

141.5

0.249

(2013–2015)

**Table 5.** *Comparative*

*hydrogeochemical*

 *data of 1986 and the present study.*

**pH** 

**Temperature**

**EC**

**Mg**

**Ca**

**Na**

**K**

**Zn**

**Fe**

**Cu**

**Al**

**SO4**

**Cl**

**Alkalinity (CaCO3)**

**F**

*Forecasting Volcanic Eruptions*

**(mg/l)**

**(°C)**

**(μs/m)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

**(mg/l)**

vi. Recent 40Ar/39Ar dating of basalts from overlapping volcanic cones from the Jos Plateau province (ranging from 2.5 to 1.34 Ma) confirms the Quaternary age (Pleistocene epoch) of emplacement for these volcanoes and the intermittency of eruptions inter and intra the volcanic line in the provinces.

ppm parts per million (1/10<sup>6</sup>

*Is a Volcanic Eruption Possible in Nigeria? DOI: http://dx.doi.org/10.5772/intechopen.84253*

**Author details**

\*, Isah Lekmang<sup>1</sup>

provided the original work is properly cited.

1 Department of Geology, University of Jos, Jos, Nigeria

3 Centre for Geodesy and Geodynamics, Toro, Nigeria

\*Address all correspondence to: ualexanderlar@yahoo.co.uk

, Cedric Longpia<sup>2</sup> and Mohammed Tsalha<sup>3</sup>

2 Department of Mining Engineering, Plateau State Polytechnique—Barakin Ladi,

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

Uriah Lar1

Jos, Nigeria

**27**

SMOW standard mean ocean water

)

ICP-OES inductively coupled plasma optical emission spectrometry **∂** stable isotope ratio expressed relative to a standard

