diff --git a/dumux/geomechanics/elastic/model.hh b/dumux/geomechanics/elastic/model.hh
index 82614c943f8ff39a015ecf7e49dd6a2987a83f91..bce39074e947616beab3cf9311ea9d424b43ebf2 100644
--- a/dumux/geomechanics/elastic/model.hh
+++ b/dumux/geomechanics/elastic/model.hh
@@ -19,7 +19,34 @@
 /*!
  * \file
  * \ingroup Elastic
- * \brief Defines a type tag and some properties for the elastic geomechanical model
+ * \brief A geomechanical model.
+ *
+ * This model describes the deformation of a solid body using the theory of linear elasticity.
+ * The momentum balance equation of the solid body can be expressed by
+ \f[
+ \nabla\cdot\boldsymbol{\sigma} + \rho \mathbf{g} + \mathbf{f} = \rho\ddot{\mathbf{u}},
+ \f]
+ * where \f$ \boldsymbol{\sigma} \f$ is the stress tensor, \f$ \rho \f$ is the density of
+ * the solid, \f$ \mathbf{f} \f$ in \f$ \mathrm{N/m^3} \f$  is the external force acting on the body per unit volume (e.g. magnetism),
+ * and \f$ \mathbf{u} = \mathbf{x} - \mathbf{x}_{\mathrm{initial}} \f$ is the displacement,
+ * defined as the difference in material points \f$ \mathbf{x} \f$ and \f$ \mathbf{x}_{\mathrm{initial}} \f$
+ * in the deformed and undeformed (initial) state, respectively. The model assumes quasi-static conditions,
+ * that is, the above momentum balance equation is solved under the assumption that the acceleration term
+ * \f$ \rho\ddot{\mathbf{u}} \approx 0\f$.
+ *
+ * Per default, Hookes' Law is used for expressing the stress tensor \f$ \boldsymbol{\sigma} \f$ as a function of the
+ * displacement:
+ \f[
+ \boldsymbol{\sigma} = \lambda\mathrm{tr}(\boldsymbol{\varepsilon}) \mathbf{I} + 2G \boldsymbol{\varepsilon},
+ \f]
+ * with
+ \f[
+ \boldsymbol{\varepsilon} = \frac{1}{2} \left[ \nabla\mathbf{u} + (\nabla\mathbf{u})^{\mathrm{T}} \right].
+ \f]
+ *
+ * Primary variables are the displacements in each direction \f$ \mathbf{u} \f$.
+ * Gravity can be enabled or disabled via a runtime parameter.
+ *
  */
 #ifndef DUMUX_GEOMECHANICS_ELASTIC_MODEL_HH
 #define DUMUX_GEOMECHANICS_ELASTIC_MODEL_HH
diff --git a/dumux/geomechanics/poroelastic/model.hh b/dumux/geomechanics/poroelastic/model.hh
index 68334dd6e781e40eababcfa2ef37bc3483dec67d..98d590e4f4133e4b17e2c1d22a340a4e0a614e95 100644
--- a/dumux/geomechanics/poroelastic/model.hh
+++ b/dumux/geomechanics/poroelastic/model.hh
@@ -19,7 +19,41 @@
 /*!
  * \file
  * \ingroup PoroElastic
- * \brief Defines a type tag and some properties for the poroelastic geomechanical model
+ * \brief A poroelastic geomechanical model
+ *
+ * This model describes the deformation of a porous medium using the theory of linear poroelasticity.
+ * The momentum balance equation of a porous medium can be expressed by
+ \f[
+ \nabla\cdot\boldsymbol{\sigma_{\mathrm{eff}}} + \rho \mathbf{g} + \mathbf{f} = \rho\ddot{\mathbf{u}},
+ \f]
+ * where \f$ \boldsymbol{\sigma_{\mathrm{eff}}} \f$ is the effective stress tensor,
+ * \f$ \rho = (1 - \phi) \rho_s + \phi \rho_f \f$ is the average density of solids and fluids within the porous medium,
+ * \f$ \mathbf{f} \f$ in \f$ \mathrm{N/m^3} \f$  is the external force acting on the body per unit volume (e.g. magnetism),
+ * and \f$ \mathbf{u} = \mathbf{x} - \mathbf{x}_{\mathrm{initial}} \f$ is the displacement,
+ * defined as the difference in material points \f$ \mathbf{x} \f$ and \f$ \mathbf{x}_{\mathrm{initial}} \f$
+ * in the deformed and undeformed (initial) state, respectively. The model assumes quasi-static conditions,
+ * that is, the above momentum balance equation is solved under the assumption that the acceleration term
+ * \f$ \rho\ddot{\mathbf{u}} \approx 0\f$.
+ *
+ * Using the concept of the effective stress, the effective stress tensor \f$ \boldsymbol{\sigma_{\mathrm{eff}}} \f$ is
+ * determined by the stress tensor \f$ \boldsymbol{\sigma} \f$ , the effective pore pressure \f$ p_{\mathrm{eff}} \f$ and the Biot's coefficient \f$ \alpha \f$ :
+ \f[
+ \boldsymbol{\sigma_{\mathrm{eff}}} = \boldsymbol{\sigma} - \alpha p_{\mathrm{eff}} \mathbf{I}
+ \f]
+ *
+ * Per default, Hookes' Law is used for expressing the stress tensor \f$ \boldsymbol{\sigma} \f$ as a function of the
+ * displacement:
+ \f[
+ \boldsymbol{\sigma} = \lambda\mathrm{tr}(\boldsymbol{\varepsilon}) \mathbf{I} + 2G \boldsymbol{\varepsilon},
+ \f]
+ * with
+ \f[
+ \boldsymbol{\varepsilon} = \frac{1}{2} \left[ \nabla\mathbf{u} + (\nabla\mathbf{u})^{\mathrm{T}} \right].
+ \f]
+ *
+ * Primary variables are the displacements in each direction \f$ \mathbf{u} \f$.
+ * Gravity can be enabled or disabled via a runtime parameter.
+ *
  */
 #ifndef DUMUX_GEOMECHANICS_POROELASTIC_MODEL_HH
 #define DUMUX_GEOMECHANICS_POROELASTIC_MODEL_HH